Male Basil I Konstantinos

Basil I's father is Konstantinos Porphyrogenetis Mamikonian and his mother is Pancalo daughter Ashot IV.  His paternal grandfather is Himayeak Mamikonian; his maternal grandfather is Ashot IV Smbat VII.  He is an only child.

Basil I's family with Eudoxia Ingerina

Basil I and Eudoxia are married (further details are not known). They have two sons and a daughter, named Constantine Porphyrogenetis, Gregoria Porphyrogenitia and Leo VI.