Đurađ Branković
Đurađ Branković was the Serbian Despot from 1427 to 1456. He was one of the last Serbian medieval rulers. He was a participant in the battle of Ankara (1402) and Ottoman Interregnum (1403-1413). During his reign, the despotate was a vassal of both, Ottoman sultans as well as Hungarian kings. Despot George was neutral during the Polish-Lithuanian (1444) and Hungarian-Wallachian (1448) crusades. In 1455, he was wounded and imprisoned during clashes with the Hungarians, after which the young Sultan Mehmed II launched the Siege of Belgrade and its large Hungarian garrison. Despot Đurađ died at the end of 1456, due to complications stemming from the wound. After his death, Serbia, Bosnia and Albania became practically annexed by sultan Mehmed II, which only ended after centuries of additional conquests of Byzantine lands. Đurađ attained a large library of Serbian, Slavonic, Latin, and Greek manuscripts. He made his capital Smederevo a centre of Serbian culture. He was the first of the Branković dynasty to hold the Serbian monarchy.