In the category of the members of the College of Cardinals in the central Middle Ages (11th to 13th century), an external cardinal (as opposed to a "curial cardinal"[1]) a Cardinal of the Holy Roman Church who did not reside in the Roman Curia, because of simultaneously being a bishop of the episcopal see other than suburbicarian, or abbot of an abbey situated outside Rome.[2] In the wider sense, it may also concern cardinals who were appointed to the external episcopal sees and resigned their memberships in the College of Cardinals with this appointment. As well, it can concern cardinals who were generally curial cardinals, but for some time exercised the posts of administrators or prelates of the external churches.[3]
Today, the great majority of the cardinals are archbishops of the main metropolitan dioceses of the world and reside in their countries. Apart from the exclusive right of the election of the new pope, their dignity is purely honorific. However, originally the College of Cardinals was simply a college of the clergy of the City of Rome, constituted of the bishops of the seven dioceses (called suburbicarian sees) bordering the diocese of Rome (cardinal-bishops), priests of the parochial churches of Rome (cardinal-priests) and deacons heading the ecclesiastical regions of the city of Rome (cardinal-deacons). Unlike today, the cardinals had real jurisdiction over the dioceses, parochial churches (called tituli) or deaconries to which they were attached.[4] The phenomenon of the external cardinalate in the late Middle Ages constituted the first exception to the rule, that cardinals – members of the clergy of the diocese of Rome – cannot serve simultaneously in another, external church, which is now common practice.
The cardinals of the Holy Roman Church up to the 11th century had strictly liturgical duties and generally took no part in the government of the Church. Cardinal bishops were equal to the other bishops, even if celebrating the rite of consecration of the new pope gave them considerable prestige, while the dignity of the cardinal priest or deacon was considered lower than that of a bishop. The liturgical service in the five patriarchal basilicas of Rome, as well as day pastoral duties in constant presence of the cardinals at Rome.[8]
This situation started to gradually change with the ascension of Pope Leo IX (1049–1054) and the beginning of the Reform Papacy. This pope, in order to reform the corrupted Roman clergy, appointed several new cardinals from the monastic centers outside Rome, such as Monte Cassino, Remiremont and Cluny. These new cardinals became his close advisors. Leo's successors continued this trend and Nicholas II in 1059 gave the cardinals the exclusive right to elect a new pope.[9] At the end of the 11th century the boca formed a single College of Cardinals, which became the main body of the papal government — they served as experts or judges in the legal causes (auditors), countersigned the solemn papal privileges, acted as governors of the cities or provinces of the Papal States or were sent by the popes on important diplomatic missions. The cardinals became the most important members of the Roman Curia, and as such were still required to reside in the papal court, unless they were dispatched for a legatine mission in the name of the pope.[10]
Almost simultaneously to the development of the College of Cardinals as a body of papal advisors, the popes started to elevate to the cardinalate some "external" abbots. After such appointments, they continued to reside in their abbeys and did not become members of the Papal curia. On the other hands, the elections of the cardinals to the posts of abbots of external monasteries were also ratified by the popes.[11] The main goal of such appointments was probably to strengthen the ties between some important monastic centers with the Roman Church.[11] The first known instances of such appointments concerned the abbey of Montecassino, one of the main centers supporting reform of the Church.[12] In 1057 cardinal-deacon Frederick de Lorraine (the future pope Stephen X) was elected abbot of Montecassino; Pope Victor II confirmed his election and simultaneously named him cardinal-priest of S. Crisogono.[13] His successor as abbot of Montecassino, Desiderio, was also quickly promoted to the cardinalate, but continued to act also as abbot.[14] From 1057 until 1259/62 at least eight abbots of Montecassino were simultaneously members of the College of Cardinals.[15] Also some other Italian (e.g. Subiaco, Farfa, Vallombrosa, S. Sophia in Benevento) and French abbeys (St Victor at Marseille) were for some time ruled by the cardinal-abbots.[15]
During the Investiture Controversy, both the legitimate Popes as well as Antipope Clement III developed another, not entirely new, practice.[16] They appointed their cardinals to the important Episcopal sees in Italy in order to assure their government by their own trusted collaborators.[17] Antipope Clement III named cardinals Hugo Candidus and Roberto of S. Marco bishops of Fermo and Faenza respectively.[18] Popes Victor III and Urban II appointed their cardinals to the episcopal sees of Brescia (Herimanus) and Reggio-Emilia (Bonussenior). The practice was continued by successive popes, who named their cardinals particularly to the recently reestablished Latinarchiepiscopal sees in southern Italy (Siponto, Brindisi, Salerno, Benevento).[19] Also, three successive archbishops of Pisa: Uberto Rossi Lanfranchi (1133–1137/38), Balduino (1138–1145) and Villano Caetani (1146–1175) were initially the cardinals.[20]
Up to the pontificate of Pope Alexander III (1159–1181), all the cardinals who were appointed to the external episcopal sees, resigned their membership in the College of Cardinals after receiving episcopal consecration, which clearly shows that the episcopate was considered a higher dignity than that of cardinal-priest or deacon.[21] On the other hand, the bishops were never appointed cardinals.[22] Certainly, the episcopate and cardinalate were considered incompatible dignities.[23] However, during Alexander's pontificate a change is apparent; although there were still the cases of the cardinals leaving the College of Cardinals after assuming episcopal office (Lombardo of Benevento, Rainaldo of Gaeta), there also appeared members of the College who were simultaneously cardinals and bishops.[24] Perhaps Alexander III followed here an example of his rival, Antipope Victor IV, who in 1162 appointed Aicardo Cornazzano bishop of Parma and cardinal-priest.[25] The first such instance in the legitimate obedience was Conrad of Wittelsbach, who was appointed cardinal-priest of S. Marcello in December 1165 and subsequently promoted to the suburbicarian see of Sabina, but continued to act also as archbishop of Mainz.[26] Archbishop of Reims Guillaume aux Blanches Mains was named cardinal priest of S. Sabina in 1179, but retained archdiocese of Reims;[27] similarly bishops Giovanni of Toscanella, Ruffino of Rimini and Gerardo of Novara, elevated to the cardinalate in 1189, 1190 and 1211 respectively.[28] On the other hand, when cardinal-priest Uberto Crivelli was elected and consecrated archbishop of Milan in 1185, he retained his cardinalate and his Roman titulus (S. Lorenzo in Damaso). The posts of cardinal and bishop were no longer considered incompatible with each other. Moreover, the rank of cardinal-priest or cardinal-deacon became equal to that of bishop. However, it seems that the elected, but not yet consecrated, bishops who were appointed cardinals were generally obliged to resign their sees.[29]
Further development occurred in the pontificate of Clement III (1187–1191). Cardinals elected to the external sees renounced their titular churches but without resigning their membership in the College of Cardinals. They used the title cardinalis Sanctae Romanae Ecclesiae in addition to the episcopal title, without indicating their cardinalitial order or titular church.[30] The first such case was that of Adelardo Cattaneo, cardinal-priest of S. Marcello from 1185 and bishop of Verona 1188–1214.[31] That he resigned the church of San Marcello appears not only from his titulature in the documents, but also from the fact that during his lifetime a new cardinal-priest of this title (Fidanzio) was appointed.[32] The case of Adelardo was followed by the cardinal-archbishops Guy Paré of Reims (1204), Uberto Pirovano of Milan (1207) and Stephen Langton of Canterbury (1207) under Pope Innocent III.[33] At the end of 12th century ca. 15% of the members of the College of Cardinals were "external" cardinals.[34]
End of the medieval "external" cardinalate
Despite the cases mentioned above, the pontificate of Innocent III marks also the beginning of the end of the "external" cardinalate. Stephen Langton was the last cardinal allowed by the Pope to become a diocesan bishop of the external see. From that time the popes constantly rejected all such postulations made by the cathedral chapters, indicating that the presence of the cardinals in the papal curia is indispensable.[35] On the other hand, bishops appointed to the College of Cardinals were obliged to resign their sees (although it must be remarked that until the end of the 13th century they were appointed always to the rank of cardinal-bishop).[36] It is still possible to find a few cases of the cardinals who exercised the posts of administrators of the episcopal sees, but only for a short time, often as part of their legatine duties. The last instance of external cardinal sensu stricto was abbot Riccardo of Montecassino (1252–1259/62). Generally already in the pontificate of Gregory IX (1227–1241), the College of Cardinals became an exclusively curial body, without any "external" element,[37] and remained such until the Great Western Schism (1378–1417). However, during this time the rank of cardinal became also the highest in the Catholic Church, inferior only to the Pope.[38]
The phenomenon of the "external" cardinalate was revived during the Great Western Schism, but in another form and for other reasons. Popes from the rival obediences gave the cardinalitial dignities to the churchmen serving European monarchs (Crown-cardinals) without calling them to the Roman Curia, in order to assure the support of the monarchs. These cardinals continued to reside in their countries. Additionally, the curial cardinals in 13th century started to cumulate a great number of the benefices,[39] from the time of the Schism including also the episcopal sees.[40] After the Council of Trent (1545–1563), the cardinals occupying external bishoprics were generally obliged to reside in them.[41] Today, the majority of the cardinals are simultaneously diocesan archbishops or bishops,[42] and they have no real jurisdiction over their titular churches at Rome.[43]
Titulature and engagement in the papal government
There was no consistency to the titulature used by the "external" cardinals in the official documents issued by the popes, secular rulers or by themselves. Cardinal-abbots subscribed or were called sometimes only as cardinals, sometimes only as abbots, and sometimes using both titles. Abbot Mainardo of Pomposa subscribed papal bulls only as cardinal-bishop of Silva Candida. Desiderius of Montecassino subscribed papal bulls as abbot and cardinal or only as cardinal, while the papal privileges for the abbey Montecassino call him either cardinal and abbot or only abbot. Abbot Richard of St.-Victor used the forms “cardinal and abbot” or only abbot. Leonato of S. Clemente in Casauria in the private documents subscribed as cardinal and abbot but the papal privileges issued for him call him only abbot without indicating his cardinalate.[44]
Cardinals who simultaneously were also bishops usually appear in the documents with both titles: cardinalitial and episcopal. The only exceptions are archbishop Uberto Crivelli of Milan, who subscribed papal bulls only as cardinal, and Ruggiero of Benevento, who generally was styled only as archbishop, while his cardinalate was mentioned very infrequently.[45]
Even more differentiated was the engagement of the "external" cardinals in the Church government and the papal policy, even if limited evidence does not fully highlight this question. Certainly some of them spent some time working in the papal curia, which is attested by their subscriptions on the papal bulls. Among the signatories of the papal privileges appear abbots Desiderius of Montecassino, Mainardo of Pomposa, Giovanni of Subiaco, Richard of St.-Victor, Oderisio de Marsi of Montecassino, Bernardo degli Uberti of Vallombrosa, Amico of S. Vincenzo, Adenulf of Farfa, Benedetto of Torre Maggiore and Giovanni of S. Sophia,[46] as well as the bishops Hugo Candidus, Konrad von Wittelsbach, Guillaume of Reims, Uberto Crivelli of Milan, Giovanni of Toscanella and Ruffino of Rimini.[47] The last three seem to have been de facto curial cardinals, having spent at the papal court most of their time.[48] On the other hand, cardinals like Pietro of S. Benedetto in Salerno, Rainaldo of Montecassino, Simone of Subiaco, Leonato of S. Clemente in Casauria, Ruggiero of Benevento, Roffredo of Montecassino or Riccardo of Montecassino seem to have never participated in the curial business.[49] Also cardinals Adelardo Cattaneo of Verona, Guy Paré of Reims, Uberto Pirovano of Milan and Stephen Langton of Canterbury after their episcopal appointments are no longer attested in the papal curia.[50]
Several "external" cardinals acted as papal legates or vicars, often in the region of their episcopal seat or abbey. Among them were:[51]
Peter Igneus of S. Salvatore – legate in Germany (1079) and France (1080),
Mainardo of Pomposa – legate before Emperor Henry IV (1065) and in Milan (1067)
Richard of St.-Victor – legate in Spain for many years
Besides, some "external" cardinals participated in the papal elections: Desiderius of Montecassino and Richard of St.-Victor in 1086,[52] Oderisio de Marsi in 1088,[53] Enrico of Mazara and Amico of S. Vincenzo in 1118,[54] Simone Borelli in 1159,[55] Uberto Crivelli in 1185, probably also Konrad von Wittelsbach in 1185,[56] Giovanni of Toscanella in 1191 and 1198,[57] and Ruffino of Rimini in 1191.[58]
Three "external" cardinals became popes: Frederick of Montecassino became Pope Stephen IX in 1057, Desiderius of Montecassino became Pope Victor III in 1086 and Uberto Crivelli of Milan became Pope Urban III in 1185.
Lists of the "external" cardinals
Note: The "external" cardinals have been divided into four subcategories, of whom only the first two concern the "external" cardinals sensu stricto. Some cardinals belonged to more than one subcategory. The disputed cases are listed separately at the end of the each subsection. Cardinals created by antipopes ("pseudocardinals") are also included.
Cardinal-abbots
The list is arranged chronologically by the date of appointment of the abbot to the cardinalate or of the cardinal to the abbacy.
He joined the obedience of Antipope Clement III in 1084 and then became archdeacon of the Holy Roman Church. Later, he made submission to the Pope Paschalis II
It is not known if he was promoted by Innocent IV (1243–1254) or by Alexander IV (1254–1261). He was deposed in 1259 for having participated in the coronation of Manfred of Sicily (the enemy of the pope Alexander IV), but continued to act as abbot and to style himself as cardinal until his death in 1262. The last instance of "external" cardinal in the Middle Ages
According to historian Pietro Pollidoro (18th century) ancient inscription in the monastery of S. Giovanni in Venere calls Abbot Oderisio I "deacon of the Holy Roman Church"; this testimony can not be verified because this inscription has not been preserved to our times
The theory that he was a cardinal of S. Prisca is based on the privilege issued for him by Pope Alexander II in July 1066. However, the true meaning of this privilege is uncertain because in other documents issued after that date he is constantly referred to only as abbot[85]
The only contemporary source attesting his cardinalate is the necrology of the abbey of Montecassino. In the few official contemporary documents that refer to him (issued 1176, 1195 and 1200) he appears only as abbot. One inscription dated April 1165 calls him "subdeacon of the Holy Roman Church"[87]
No documents issued during his short reign in the abbey of Montecassino have been preserved to our times. Therefore, the testimony of Alphonsus Ciacconius (1540–1599) that he was named cardinal by Alexander III can not be verified.
Cardinals – diocesan bishops (11–13th century)
The list is arranged chronologically by the date of appointment of the bishop to the cardinalate or of the cardinal to the episcopate.
Excommunicated by Pope Gregory VII in 1078, joined the obedience of Antipope Clement III in 1080. In 1089 he was transferred to the suburbicarian see of Palestrina
Pseudocardinal of Antipope Victor IV. He was also podesta of the city of Parma 1164–67. In 1167 he was expelled from Parma by the adherents of Pope Alexander III
He was expelled from his archdiocese in 1165 by the adherents of Antipope Paschalis III. Until 1177 he resided in papal curia or acted as papal legate.
The first instance of the legitimate cardinal who was also diocesan bishop
Cardinal-priest of S. Crisogono 1173–1179, cardinal-bishop of Tusculum 1179–1182
Bishop-elect of Meaux 1171–1175, archbishop(-elect?) of Bourges 1180–1182
Pope Alexander III forced him to resign the see of Meaux in 1175. His election to the archbishopric of Bourges remains obscure; he continued to subscribe the documents only as cardinal-bishop of Tusculum until his death, which indicates that he probably did not take possession of this see. As cardinal, he frequently acted as legate in France and in 1175 resided in Meaux for a short time
First cardinal who after appointment as bishop renounced his titulus without renouncing of his cardinalate. In 1193 Pope Celestine III gave his former title of S. Marcello to cardinal Fidanzio[98]
Cardinal-deacon of S. Maria in Via Lata 1182–1193, cardinal-priest of S. Prassede 1193–1210
Patriarch-elect of Jerusalem in 1203
Pope Innocent III confirmed his election but shortly thereafter the cardinal (legate in Outremer at that time) resigned the see without being consecrated
In 1201 he was elected also archbishop of Ravenna but this election was not ratified by the Holy See (see below)
He resigned his cardinalitial title without resigning the membership in the Sacred College. The last instance of the cardinal being simultaneously diocesan bishop before the Great Western Schism
The letter of his nomination issued in January 1201 is the only documentary proof of his cardinalate. In all known documents issued after that date he appears only as archbishop. Therefore, it is not certain whether his promotion went into effect[109]
Rolando
Created cardinal deacon of S. Maria in Portico Octaviae in the consistory of March 6, 1185
Elected Bishop of Dol in 1177, by unanimous decision of its cathedral chapter; took possession of the see in 1182
Bishop-elect of Dol from 1177 and cardinal-deacon of S. Maria in Portico 1185–87; certainly he never resided in his diocese and after his promotion to the cardinalate he appears in the documents only as cardinal-deacon, which indicates his resignation, but the exact dates of his death and of the appointment of his successor are not known (cf. Ganzer, p. 137 no. 58; and Gams, p. 547; according to Gams Rolando remained bishop of Dol until his death, but the date of death given by Gams - March 4, 1187, is undoubtedly erroneous because he subscribed several documents after that date, cf. Ganzer, p. 137 no. 58 note 12)
Cardinals who renounced their cardinalate after appointments to the external bishoprics
The list is arranged chronologically by the date of appointment of the cardinal to the external episcopal see and his renouncement of the cardinalate.
For eleven years (1087–98) he was simultaneously cardinal and bishop-elect, but after receiving episcopal consecration (1098) resigned his cardinalate. He was deposed as bishop in 1115 and died after 1116.
In 1100 Augustinus became new cardinal-priest of SS. IV Coronati[116]
This archbishop of Brindisi is referred to as former cardinal only in one document of Pope Paschalis II, which, however, does not mention his name. Therefore, his identity remains uncertain[122]
For a few months he acted simultaneously as cardinal-priest and archbishop-elect, but after episcopal consecration (September 1133) resigned his cardinalate
Despite receiving episcopal consecration on 18 April 1166 he continued to style himself as cardinal until he took possession of the see of Milan in September 1167
He appears as cardinal-deacon and bishop-elect of Gaeta in January 1169, but after receiving Episcopal consecration (before 29 March 1170) resigned his cardinalate
Cardinal-deacon 1170–1171, cardinal-priest of S. Ciriaco 1171
Archbishop of Benevento 1171–1177/79
He resigned as archbishop before March 1179 and died after July 1179. Probably the last instance of the cardinal who resigned his cardinalate after episcopal appointment[148]
First archbishop of Genoa (from 1133). His cardinalate is attested only in the chronicle of Jacobus de Voragine, who lived over a hundred years later. However, Jacobus was himself archbishop of Genoa (1292–98), and it is possible that he may have used some documents that are lost today.
Cardinals who served as administrators or prelates of the external churches (until 13th century)
He was archbishop of Esztergom 1243–1251/52. After his promotion to the cardinalate Pope Innocent IV initially allowed him to retain the administration of his former see but later forced him to resign it
Honorius III in the letter issued on December 4, 1219 informed the cathedral chapter of Paris that he had refused to confirm this election and that the chapter should elect a new candidate[167]
On May 14, 1240 Pope Gregory IX appointed new patriarch and in the letter of his nomination explained the canons of the chapter of Jerusalem the reasons of his earlier rejection of the election of Cardinal de Vitry, who had died on May 1, 1240[173]
^The term “cardinal-deacons” is known already in the 6th century, but in the official papal documents does not appear before the last quarter of the 11th century. Hüls, p. 17; Klewitz, p. 88.
^On the early Roman cardinalate see Klewitz, p. 14–31, 47–60 and 79–87; Hüls, p. 3–44; Robinson, p. 33–34; Ganzer, p. 4–6; and Sägmüller, Johannes Baptist (1913). "Cardinal (1)" . In Herbermann, Charles (ed.). Catholic Encyclopedia. New York: Robert Appleton Company.
^For the development of the role of cardinals in the 11th century and the establishment of the College of Cardinals see Robinson, p. 35–41; Ganzer, p. 6–11; Klewitz, p. 31–47, 60–79 and 88–114. For the detailed study about the engagement of the cardinals in papal government in 12th and 13th centuries see Maleczek, pp. 297–351; and Robinson, pp.90–120.
^Ganzer, p. 38–39 no. 10 and p. 190; Hüls, p. 185 no. 3
^Loud, p. 216–217; Ganzer, p. 55–69, 72–75 and 190–191. The southern Italy for several hundred years belonged to the Byzantine Empire and was ecclesiastically subordinated to the Greek Patriarchate of Constantinople, not to Rome. It was only after the Norman conquest of southern Italy in the 11th century, when the papacy was able to regain the control over this region and to replace the Greek hierarchy with the Latin one; see Klewitz, pp. 137–205.
^Ganzer, p. 86–91, 97–99; Robinson, p. 91; Zenker, p. 248
^The only exception was archbishop Rangerius of Reggio di Calabria 1091–94/95, who was appointed cardinal-priest of S. Susanna in 1094/95 and resigned his see, though probably retaining the personal title of archbishop. On Rangerius see Hüls, p. 207–208 no. 2, who has amended in some points Rangerius’ entry by Ganzer, p. 45–49 no. 14. Pope Gregory VII in 1073 elevated to the cardinalate also Atto, archbishop-elect of Milan from 1072; but Atto was unable to take possession of his see due to political reasons and never received episcopal consecration (Hüls, p. 185 no. 2; Gams, p. 796; cf. Kehr, vol. VI/1, p. 49–52 no. 101–120)
^The only exception concerned bishops of the seven dioceses bordering the diocese of Rome (suburbicarian sees), who were the cardinals ex officio. Robinson, p. 91
^Maleczek, p. 68, 94–97 and 125. The case of Ruggiero, archbishop of Benevento (1179–1221) and cardinal of S. Eusebio (attested as such in 1180) remains obscure, with the contradictory statements of the historians (cf. on him Brixius, p. 66 no. 29; Ganzer, 129–131 no. 52; and Maleczek, p. 68 and 295)
^For example, in September 1173 Alexander III named bishop-elect of Meaux, Pietro da Pavia, to the rank of cardinal-priest of S. Crisogono, and in 1175 forced him to resign his see (Ganzer, p. 123–125 no. 50). In 1182, Pedro de Cardona, archbishop-elect of Toledo, was named cardinal-priest of S. Lorenzo in Damaso by Lucius III and from the document dated 3 June 1182 appears that he resigned the see of Toledo: P(etro)…presbitero Cardinali, quondam electo vestro (Ramón Riu y Cabanas, Primeros cardenales de la sede primada, in: Boletín de la Real Academia de la Historia, XXVII, Madrid 1896, p. 144). Tommaso da Capua, archbishop elect of Naples from 1215, also resigned his see after becoming cardinal in 1216 (Ganzer, p. 162 no. 69; Maleczek, p. 201–03). More obscure is the case of Rolando, bishop-elect of Dol from 1177 and cardinal-deacon of S. Maria in Portico 1185–87; certainly he never resided in his diocese and after his promotion to the cardinalate he appears in the documents only as cardinal-deacon, which indicates his resignation, but the exact dates of his death and of the appointment of his successor are not known (cf. Ganzer, p. 137 no. 58; and Gams, p. 547; according to Gams Rolando remained bishop of Dol until his death, but the date of death given by Gams - March 4, 1187, is undoubtedly erroneous because he subscribed several documents after that date, cf. Ganzer, p. 137 no. 58 note 12)
^Paravicini Bagliani, p. 1; Ganzer, p. 202; see also several examples of the rejected episcopal elections of the cardinals in Ganzer, p. 162, 165 and 167.
^Paravicini Bagliani, p. 537; Ganzer, p. 202. The first such instance occurred already in 1166, when bishop Ugo Pierleoni of Piacenza was transferred to the suburbicarian see of Tusculum by the Pope Alexander III (Ganzer, p. 114 no. 44; Brixius, p. 62 no. 9). However, it seems that it was the only such case in the 12th century. The next occurred only in the 13th century, and from the pontificate of Innocent IV (1243–1254) they became frequent (cf. Eubel, p. 3–13; Paravicini Bagliani, p. 385–388)
^Cumulation of the benefices by the cardinals initially included only the posts in the cathedral chapters or of the commendatory abbots (cf. Paravicini Bagliani, p. 360)
^Ganzer, p. 131 and 198. Also Anselmo of Naples appears in the documents only as archbishop, but it is not certain whether his promotion actually went into effect (Maleczek, p. 125)
^The examination of his subscriptions on the papal bulls indicates his presence in the papal curia in the spring of 1191 and at the beginning of 1198, which makes his participation in these elections very likely (cf. Maleczek, p. 364, 376–377)
^The examination of his subscriptions on the papal bulls indicates his presence in the papal curia in the spring of 1191, which makes his participation in this election very likely (cf. Ganzer, p. 147)
^Ganzer, p. 15–16 no.1; Hüls, p. 168–169 no. 2; Klewitz, p. 64
^Klewitz, p. 126 no. 21 and p. 217; Ganzer, p. 69–71 no. 23; Hüls, p. 193–194 no. 1; Zenker, p. 96.
^Brixius, p. 37 no. 31; Ganzer, p. 75–79 no. 29; Hüls, p. 221–222 no. 1; Klewitz, p. 133 no. 19 and p. 217; Zenker, p. 181–182
^Brixius, p. 40 no. 1; Ganzer, p. 81–83 no. 30; Zenker, p. 160–161.
^Klewitz, p. 22 note 40; Ganzer, p. 94 no. 37; Zenker, p. 139.
^Brixius, p. 46 no. 42; Zenker, p. 191–192; Loud, p. 157–158 and 241; Ganzer, p. 94–97 no. 38 (Ganzer erroneously dated his creation to 1145, see Loud, p. 158 note 87).
^Brixius, p.59–60 no. 11; Ganzer, p. 102–104 no. 42; Zenker, p. 140–141.
^Klewitz, p. 112–113; Ganzer, p. 26–29 no. 4; Hüls, p.198 no. 1.
^Klewitz affirms his cardinalate, while Ganzer argues that he only obtained some privileges proper to the cardinals of the Holy Roman Church. Hüls lists him among the occupants of the title of S. Prisca with a question mark
^Ganzer, p. 131–132 no. 53; Kehr, vol. IV, p. 279–280
^Subdeacons of the Holy Roman Church did not belong to the College of Cardinals (Robinson, p. 38).
^Hüls, p. 158–160 no. 1; Ganzer, p. 38–39 no. 10; cfr. Schwartz, p. 235, 336.
^The episcopate of Hugo Candidus in Fermo remains obscure. In the bull of Clement III dated November 4, 1084 he is explicitly called "cardinal of S. Clemente and bishop of Fermo", but in 1080 appears in the documents bishop Hugo of Fermo who certainly wasn't identical to this cardinal; cf. Ganzer, p. 38
^The following titles were attached to the Basilica of St. Paul Outside the Walls in the 11th century: S. Marcello, S. Sabina, S. Prisca, S. Balbina, SS. Nereo e Achilleo, S. Sisto and S. Susanna (Klewitz, p. 59). None of them had known occupant by 1050 (cf. Hüls, p. 153, 184, 193, 198, 203, 205 and 207)
^See Hüls, p. 185 no. 3, who has amended Roberto’s entry by Ganzer, p. 39–40 no. 11; cf. Schwartz, p. 171.
^Hüls, p. 202 no. 1; Ganzer, p. 40–43 no. 12; Schwartz, p. 108–109; cf. Gams, p. 779
^Hüls, p. 203 no. 2; Klewitz, p. 130 no. 44; Ganzer, p. 42
^Hüls, p. 188–189 no. 4; Ganzer, p. 49–51 no. 15; cf. Schwartz, p. 198–199.
^Ganzer, p. 57, remarks that although this cardinal is commonly identified with archbishop Niccolo (1101–1104), it may have been also his successor Guglielmo (1104–1118). See also Kehr, vol. IX, p. 390 no. 20 with note; cf. Gams, p. 862
^Ganzer, p. 51–55 no. 16; Hüls, p. 172–174 no. 5; Klewitz, p. 122 no. 3; Schwartz, p. 187–188.
^See Ganzer, p. 194. Ganzer suggests that after Lombardo perhaps also Ruggiero of Benevento resigned his cardinalate, but according to Brixius, p. 137 and Maleczek, p. 68 he remained a cardinal until his death.
^Hüls, p. 213 no. 6; Ott., Michael (1913). "Guitmund" . In Herbermann, Charles (ed.). Catholic Encyclopedia. New York: Robert Appleton Company.; cf. Kehr, vol. VIII, p. 281–283
^Klewitz, p. 128 no. 36; Hüls, p. 194–195 no. 2; Schwartz, p. 265.
^According to Hüls, p. 195, the paleographical research on the original documents subscribed by the cardinal and bishop makes this identification very likely but absolute certainty has not been achieved.
Ganzer, Klaus (1963). Die Entwicklung des auswärtigen Kardinalats im hohen Mittelalter. Ein Beitrag zur Geschichte des Kardinalkollegiums vom 11.bis 13. Jahrhundert. Bibliothek des Deutschen Historischen Instituts in Rom (in German). Tübingen: Max Niemeyer Verlag.
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Schwartz, Gerhard (1913). Die Besetzung der Bistümern Reichsitaliens unter den sächsischen und salischen Kaisern mit den Listen der Bischöfe 951–1122 (in German). Verlag von B. G. Teubner in Leipzig und Berlin.
Zenker, Barbara (1964). Die Mitglieder des Kardinalkollegiums von 1130 bis 1159 (in German). Würzburg.{{cite book}}: CS1 maint: location missing publisher (link)