John I Doukas of Thessaly

Parents

• Michael II Komnenos Doukas

Children

• Helena Doukaina Angelina
• Helena Angelina Komnene

Siblings

• Helena Angelina Ducaina
• Demetrios Doukas Komnenos Koutroules
• Nikephoros I Komnenos Doukas
• John Doukas
• Anna Komnene Doukaina