Alexios married Irene Doukaina, Empress of Byzantium in 1078. Irene was born in 1066 in Constantinople, Byzantium; died on 19 Feb 1123 in Constantinople, Byzantium. [Group Sheet] [Family Chart]

1. John Comnenos, II "The Beautiful" Byzantium Emperor of the Byzantine was born on 13 Sep 1087 in Constantinople; died on 8 Apr 1143 in Cilicia, Armenia.
2. Theodora Comnenos, Princess of Byzantium was born on 15 Jan 1096 in Constantinople, Byzantium.
3. Isaac Comnenus, Prince of Byzantium Dignity of Sebastokrator was born between 16 Jan 1093 and 16 Jan 1094; died in 1152; was buried in Pherae.