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1423 in various calendars
Gregorian calendar	1423; MCDXXIII
Ab urbe condita	2176
Armenian calendar	872; ԹՎ ՊՀԲ
Assyrian calendar	6173
Balinese saka calendar	1344–1345
Bengali calendar	830
Berber calendar	2373
English Regnal year	1 Hen. 6 – 2 Hen. 6
Buddhist calendar	1967
Burmese calendar	785
Byzantine calendar	6931–6932
Chinese calendar	壬寅年 (Water Tiger); 4120 or 3913; — to —; 癸卯年 (Water Rabbit); 4121 or 3914
Coptic calendar	1139–1140
Discordian calendar	2589
Ethiopian calendar	1415–1416
Hebrew calendar	5183–5184
Hindu calendars
- Vikram Samvat	1479–1480
- Shaka Samvat	1344–1345
- Kali Yuga	4523–4524
Holocene calendar	11423
Igbo calendar	423–424
Iranian calendar	801–802
Islamic calendar	826–827
Japanese calendar	Ōei 30; (応永３０年)
Javanese calendar	1337–1338
Julian calendar	1423; MCDXXIII
Korean calendar	3756
Minguo calendar	489 before ROC; 民前489年
Nanakshahi calendar	−45
Thai solar calendar	1965–1966
Tibetan calendar	阳水虎年; (male Water-Tiger); 1549 or 1168 or 396; — to —; 阴水兔年; (female Water-Rabbit); 1550 or 1169 or 397

Millennium:	2nd millennium
Centuries:	14th century; 15th century ; 16th century;
Decades:	1400s; 1410s; 1420s ; 1430s; 1440s;
Years:	1420; 1421; 1422; 1423 ; 1424; 1425; 1426;

Year 1423 (MCDXXIII) was a common year starting on Friday (link will display the full calendar) of the Julian calendar.

Events

January–March

January 6 – The Electorate of Saxony merges with the Margravate of Meissen and the Duchy of Saxe-Wittenberg.
February 11 – Hundred Years War: The island of Tombelaine, off of the coast of France, is taken by English forces in order to be used as a base to attack Mont Saint-Michel.
March 7 – After failing to defeat Hushang Shah in a siege of Salangpur, the Gujarat Sultan Ahmad Shah Iis attacked by Hushang's army while on his way back to Ahmedabad. He wins the battle and resumes his trip home.^[1]

April–June

April 13 – Hundred Years' War:.The Treaty of Amiens is signed as a mutual defense treaty between the Duchy of Burgundy, the Duchy of Brittany and the Kingdom of England. ^[2]
April 15 – Francesco Foscari is elected the new Doge of the Republic of Venice after the death of Tommaso Mocenigo. He will serve as the Venetian Republic's executive for 34 years before being forced to abdicate a few days before his death in 1457.^[3]
April 27 – Hussite Wars – Battle of Hořice: The Taborites decisively beat the Utraquists.^[4]
April 28 – Ashikaga Yoshimochi abdicates as shogun of Japan and is succeeded by his son, Ashikaga Yoshikazu.^[5]
May 18 – The Treaty of Melno signed on September 27 to end the Gollub War between the State of the Teutonic Order (on the Baltic Sea, with a capital at Marienburg) and the alliance of Poland and Lithuania, is ratified by all three parties.^[6]
May 22 – Byzantine–Ottoman Wars: After a two-day battle, Turakhan Beg, Ottoman governor of Thessaly, breaks through the Hexamilion wall, and ravages the Peloponnese Peninsula in Greece.^[7]
May 23 – The Sultan of Gujarat, Ahmad Shah I is finally able to return home to reassume the throne. ^[1]
June 10 – Gil Sánchez Muñoz y Carbón, a Spanish Roman Catholic bishop, is elected by bishops in Avignon as the third "antipope", succeeding the late Antipope Benedict XIII. , who had died on May 23 after a reign of more than 20 years. Sánchez Muñoz takes the name of Antipope Clement VIII^[8] as the Avignon clergy disagree with Pope Martin V of Rome.

July–September

July 10 – Pope Martin V gives his approval of the Treaty of Melno.^[6]
July 31 – Hundred Years' War – Battle of Cravant: The French army is defeated at Cravant, on the banks of the River Yonne near Auxerre, by the English and their Burgundian allies.
August – The Yongle Emperor launches his fourth campaign against the Northern Yuan.^[9]
August 2 – Ataullah Muhammad Shah I begins a 50-year reign as the Sultan of Kedah in what is now Malaysia, following the death of his father, Sulaiman Shah I, who had reigned for 50 years after becoming Sultan in 1373.
August 12 – The Treaty of Sveti Srdj ends the Second Scutari War, waged between the Serbian Despotate and the Venetian Republic,^[10] over Scutari, and other former possessions of Zeta, captured by the Venetians.^[11]
September 26 – Hundred Years' War: The Battle of La Brossinière is fought in France near Bourgon in what is now the Mayenne département. The English force of 2,800 men, under the command of Sir John De la Pole, is crushed by the armies of France, Anjou and Maine, and the English suffer more than 1,400 deaths.^[12]

October–December

October 20 – The Second Parliament of King Henry VI of England assembles after having been summoned on September 1. The House of Commons, led by John Russell, will consider laws until its adjournment on February 28.
December 15 – After a two-year expedition to Byzantium, Giovanni Aurispa arrives in Venice with largest and finest collection of Greek language texts up to that time, including 238 ancient manuscripts.^[13]
December 24 – Hussite Wars: In what is now the Czech Republic, General Sigismund Korybut, commander of the Hussite Army, withdraws his troops from Prague on the orders of Vytautas, Grand Duke of Lithuania and Władysław II Jagiełło, King of Poland.^[14]

Date unknown

The three independent boroughs of Pamplona are united into a single town by royal decree, after centuries of feuds.
Dan II of Wallachia, with Hungarian help, wins two battles against the Ottomans.

Births

April 4 – Johann II of Nassau-Saarbrücken, Count of Nassau-Saarbrücken (1429–1472) (d. 1472)
May 18 – Lady Katherine Percy, English nobility (d. 1475)
May 30 – Georg von Peuerbach, Austrian astronomer (d. 1461)
June 2 – Ferdinand I of Naples (d. 1494)
June 15 – Gabriele Sforza, Archbishop of Milan (d. 1457)
July 3 – Louis XI of France, monarch of the House of Valois, King of France from 1461 to 1483 (d. 1483)^[15]
July 6 – Antonio Manetti, Italian mathematician and architect (d. 1497)
August 24 – Thomas Rotherham, English cleric (d. 1500)
September 10 – Eleanor, Princess of Asturias (d. 1425)
August – Demetrios Chalkokondyles, Greek scholar (d. 1511)

Deaths

January 23 – Margaret of Bavaria, Burgundian regent (b. 1363)
March – Richard Whittington, Lord Mayor of London (b. 1358)
May 23 – Antipope Benedict XIII (b. 1328)^[16]
October 20 – Henry Bowet, Archbishop of York
November 1 – Nicholas Eudaimonoioannes, Byzantine diplomat
December 15 – Michael Küchmeister von Sternberg, Grand Master of the Teutonic Knights

References

^ ^a ^b "Ahmedabad Kings (A.D. 1403–1573)", in History of Gujarát, ed. by James Macnabb Campbell (The Government Central Press, 1896) pp.236–241
^ John A. Wagner, ed., Encyclopedia of the Hundred Years War (Greenwood Publishing, 2006)
^ "Foscari, Francesco", by Luigi Villari, in the Encyclopædia Britannica (11th edition) (Cambridge University Press, 1911), Volume 10, p.730
^ Thomas A. Fudge; Helen J. Nicholson (2002). The Crusade Against Heretics in Bohemia, 1418-1437: Sources and Documents for the Hussite Crusades. Ashgate. p. x. ISBN 978-0-7546-0801-1.
^ Kiyoshi Ito (2008). 『足利義持』吉川弘文館〈人物叢書〉. p. 154. ISBN 978-4-642-05246-7.
^ ^a ^b Mečislovas Jučas, The Battle of Grünwald (National Museum Palace of the Grand Dukes of Lithuania, 2009) p.112
^ Babinger, Franz (1993) [1913–1936]. "Turakhān Beg". In Houtsma, Martijn Theodoor (ed.). E.J. Brill's First Encyclopaedia of Islam. Vol. VIII. Leiden: Brill. pp. 876–878. ISBN 90-04-09796-1.
^ "Antipope Clement VIII (1423-1429)", by Salvador Miranda, in Cardinals of the Holy Roman Church (Florida International University, 1998)
^ Chan, Hok-lam (1998). "The Chien-wen, Yung-lo, Hung-hsi, and Hsüan-te reigns, 1399–1435". The Cambridge History of China, Volume 7: The Ming Dynasty, 1368–1644, Part 1. Cambridge: Cambridge University Press. p. 227. ISBN 9780521243322.
^ Srđan Rudić, Vlastela Ilirskol Probnika ("The Nobility of the Illyric Coat of Arms")(Istorijski Institut Beograd, 2006) p.131
^ John V. A. Fine; John Van Antwerp Fine (1994). The Late Medieval Balkans: A Critical Survey from the Late Twelfth Century to the Ottoman Conquest. University of Michigan Press. p. 519. ISBN 0-472-08260-4.
^ Juliet R. V. Barker, Conquest: The English Kingdom of France in the Hundred Years War (Abacus, 2010)
^ Charles L. Stinger, Humanism and the Church Fathers: Ambrogio Traversari (1386-1439 and the Revival of Patristic Theology in the Early Italian Renaissance (State University of New York Press, 1977) pp. 36–37
^ Jerzy Grygiel, Życie i działalność Zygmunta Korybutowicza: Studium z dziejów stosunków polsko-czeskich w pierwszej połowie XV wieku ("The Life and Times of Zygmunta Korybutowicz: A study on the history of Polish-Czech relations in the first half of the 15th century")(Wydawnictwo Ossolineum, 1988)
^ Encyclopedia Americana: Latin America to Lytton. Scholastic Library Pub. 2006. p. 771. ISBN 978-0-7172-0139-6.
^ "Benedict (XIII) | antipope". Encyclopedia Britannica. Retrieved 21 October 2020.

[Ahmedabad-1] "Ahmedabad Kings (A.D. 1403–1573)", in History of Gujarát, ed. by James Macnabb Campbell (The Government Central Press, 1896) pp.236–241

[2] John A. Wagner, ed., Encyclopedia of the Hundred Years War (Greenwood Publishing, 2006)

[3] "Foscari, Francesco", by Luigi Villari, in the Encyclopædia Britannica (11th edition) (Cambridge University Press, 1911), Volume 10, p.730

[4] Thomas A. Fudge; Helen J. Nicholson (2002). The Crusade Against Heretics in Bohemia, 1418-1437: Sources and Documents for the Hussite Crusades. Ashgate. p. x. ISBN 978-0-7546-0801-1.

[5] Kiyoshi Ito (2008). 『足利義持』吉川弘文館〈人物叢書〉. p. 154. ISBN 978-4-642-05246-7.

[Jucas-6] Mečislovas Jučas, The Battle of Grünwald (National Museum Palace of the Grand Dukes of Lithuania, 2009) p.112

[7] Babinger, Franz (1993) [1913–1936]. "Turakhān Beg". In Houtsma, Martijn Theodoor (ed.). E.J. Brill's First Encyclopaedia of Islam. Vol. VIII. Leiden: Brill. pp. 876–878. ISBN 90-04-09796-1.

[8] "Antipope Clement VIII (1423-1429)", by Salvador Miranda, in Cardinals of the Holy Roman Church (Florida International University, 1998)

[9] Chan, Hok-lam (1998). "The Chien-wen, Yung-lo, Hung-hsi, and Hsüan-te reigns, 1399–1435". The Cambridge History of China, Volume 7: The Ming Dynasty, 1368–1644, Part 1. Cambridge: Cambridge University Press. p. 227. ISBN 9780521243322.

[10] Srđan Rudić, Vlastela Ilirskol Probnika ("The Nobility of the Illyric Coat of Arms")(Istorijski Institut Beograd, 2006) p.131

[11] John V. A. Fine; John Van Antwerp Fine (1994). The Late Medieval Balkans: A Critical Survey from the Late Twelfth Century to the Ottoman Conquest. University of Michigan Press. p. 519. ISBN 0-472-08260-4.

[12] Juliet R. V. Barker, Conquest: The English Kingdom of France in the Hundred Years War (Abacus, 2010)

[13] Charles L. Stinger, Humanism and the Church Fathers: Ambrogio Traversari (1386-1439 and the Revival of Patristic Theology in the Early Italian Renaissance (State University of New York Press, 1977) pp. 36–37

[14] Jerzy Grygiel, Życie i działalność Zygmunta Korybutowicza: Studium z dziejów stosunków polsko-czeskich w pierwszej połowie XV wieku ("The Life and Times of Zygmunta Korybutowicz: A study on the history of Polish-Czech relations in the first half of the 15th century")(Wydawnictwo Ossolineum, 1988)

[15] Encyclopedia Americana: Latin America to Lytton. Scholastic Library Pub. 2006. p. 771. ISBN 978-0-7172-0139-6.

[16] "Benedict (XIII) | antipope". Encyclopedia Britannica. Retrieved 21 October 2020.

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