Ubaldo I Visconti
Member of the Visconti of Pisa and Sardinia
Ubaldo I Visconti was the de jure overlord of the Giudicato of Cagliari from 1217. He was a member of the Visconti family of Pisa, controlling Cagliari on behalf of his brother, who was judge jure uxoris from 1218.
His grandfather, Alberto, was a... Wikipedia
Died: 1230
Children: John of Gallura and Federico Visconti
Grandchild: Nino Visconti
Great grandchild: Joanna of Gallura