Manfredo Beccaria
Manfredo Beccaria was a son of the Pavese signore Musso Beccaria and brother of Castellino. Inheriting Gropello Cairoli, he founded the Beccaria di Gropello line. His son Corrado and grandson Manfredo succeeded him; his great-granddaughter Oretta married Gaspare Visconti, to whom the fief passed.