John (Ioannis) Comnenus

John (Ioannis) was born in Constantinople, , , Byzantium.  John (Ioannis)'s father was Manuel (Michael) Comnenus Prefect and his mother is Anna ().  His paternal grandparents are Isaac Comnenus and Maria        .  He was an only child.  He died on July 12th, 1067.  He was buried in 1067.

‌John (Ioannis) and Anna were married in a religious ceremony.  They had a son and a daughter, named Alexius I Comnenus and Maria.