He was a child when his father was murdered by his rival Battista Canneschi in June 1445 .
Born in Bologna , Giovanni II was the son of Annibale I Bentivoglio , then chief magistrate of the commune , and Donnina Visconti .
Annibale I Bentivoglio was a son when Annibale I Bentivoglio 's father was murdered by his rival Battista Canneschi in June 1445 .
Born in Bologna , Giovanni II was the son of Annibale I Bentivoglio , then chief magistrate of the commune , and Donnina Visconti .