Георгий Бранкович
In the feud between Đurađ Branković and his uncle, Stefan Lazarević (son of Prince Lazar), who later received the title of Byzantine Despot, Đurađ II sided with Stefan. Due to Đurađ's support, Stefan defeated Turkish forces led by Đurađ Branković in the Battle of Tripolje on Kosovo Field in November 1402.