The term is etymologically connected to the vestiarion, the imperial wardrobe, but despite earlier attempts to connect the vestai and the related title of vestarches, the head of the class of the vestai,[1] with the officials of the vestiarion,[2] no such relation appears to have existed.[3]
The title is first attested for the reign of Emperor John I Tzimiskes (r. 969–976), when it was held by Nikephoros Phokas, son of the kouropalatesLeo Phokas. The title remained high in the Byzantine imperial hierarchy throughout most of the 11th century, being often combined with the title of magistros and awarded to prominent generals, among others Isaac Komnenos (emperor in 1057–1059) when he was stratopedarches of the East, Leo Tornikios and Nikephoros Botaneiates (emperor in 1078–1081) during his tenure as doux of Edessa and Antioch.[3][4] The Escorial Taktikon, a list of offices and court titles and their precedence compiled in the 970s, distinguishes between "bearded" (barbatoi) vestai, who also held the titles of patrikios or magistros, and the eunuch (ektomiai) vestai, who held the title of praipositos.[3]
As with other titles of the middle Byzantine period, the prestige of vestes declined towards the end of the 11th century, when it is attested as being held by lower-ranking officials. To counter this devaluation, the superior title of protovestes (Greek: πρωτοβέστης, 'first vestes') appeared at the same time. Both titles, however, do not appear to have survived the reign of Emperor Alexios I Komnenos (r. 1081–1118).[3]