Ilario Doria

Hilario Doria (, Latin: Illarius Doria; He lived in the Genoese colony of Caffa in Crimea for most of his early life. presumably in conjunction with his marriage to Princess Zampia Palaiologina, an illegitimate daughter of Emperor John V Palaiologos . The marriage to Zampia made Doria into the brother-in-law of the incumbent emperor, Manuel II Palaiologos . Doria rapidly rose through the ranks of Byzantine society and attained the court title of mesazon under Manuel, In the late 1390s and early 1400s, Doria served as mesazon together with Demetrios Palaiologos Goudeles.

Career

Byzantine diplomat In the aftermath of the Ottoman victory against crusading forces at the Battle of Nicopolis on 25 September 1396, Pope Boniface IX intensified attempts to rally western aid for the Byzantine Empire. He sent his prelate Paolo de Bilenci, titular Bishop of Chalcedon, to preach the call for a crusade throughout Europe. Doria was sent by Manuel to the west in 1397 to aid in these efforts and explain the threats facing the empire. Richard knighted one of the Byzantine envoys present, presumably Doria. Doria left England in January 1399

On 30 October 1418, Doria was a witness at the signing of a renewed agreement between Byzantium and Venice.

Despite Manuel's attempt at reconciliation, Demetrios reportedly intended to flee to the court of Sultan Murad II but soon decided to travel to Hungary instead, accompanied by Doria and Doria's son-in-law George Izaoul (possibly the same person as Giorgio de' Buondelmonti). Doria accompanied Demetrios as either a diplomat or a fellow refugee. At least two of his daughters were also daughters of Zampia. Another daughter , married George Izaoul in 1421 or 1422.