Alberic III, Count of Tusculum

Alberic III was the Count of Tusculum, along with Galeria, Preneste, and Arce, from 1024, when his brother the count Roman was elected Pope John XIX, until his own death. He was a son of Gregory I and Maria, brother of Popes Benedict VIII and John XIX, and brother-in-law of Thrasimund III of Spoleto.