Isaac II Angelus, d. 1204, Eastern Roman Emperor, son of Andronicus Angelus (m. Euphrosyne Castamonita), son of Theodora Comnena (m. Constantinus Angelus), daughter of Alexis I, Comnenus, b. 1048, d. 15 Aug 1118, Emperor of the East, who m. c 1078, Irene, daughter of Andonicus Ducas, by wife Maria, daughter of Trojan of Bulgaria, son of Samuel, d. 1014, King of Bulgaria. [Ancestral Roots, line 45-27]