John I Doukas of Thessaly ruler of Thessaly (b. 1240) Parents Michael II Komnenos Doukas Children Helena Angelina Komnene Konstantinos Doukas of Thessaly Theodore Angelos Helena Doukaina Angelina Siblings Demetrios Doukas Komnenos Koutroules Helena Angelina Ducaina John Doukas Nikephoros I Komnenos Doukas Anna Komnene Doukaina
