Isaac II Angelos Byzantine emperor (1155-1204) (1155–1204) Parents Euphrosyne Kastamonitissa Andronikos Doukas Angelos Children Manuel Angelos Anna-Euphrosyne Alexios IV Angelos John Angelus of Syrmia Irene Angelina Siblings Constantine Komnenos Angelos Theodora Angelina Alexios III Angelos John Angelos Irène Ange Theodore Angelos Partners Irene Palaiologos Margaret of Hungary
