m. c. 1080
Facts and Events
William V of Montferrat (occ./piem. Guilhem, it. Guglielmo) (c. 1115 – 1191), also known as William the Old to distinguish him from his eldest son, William Longsword, was marquess of Montferrat from c. 1136 to his death in 1191. William was the only son of marquess Renier I and his wife Gisela, a daughter of William I, Count of Burgundy and widow of Count Humbert II of Savoy. It seems likely, given that he was still fit enough to participate in battle in 1187, that William was one of his parents' youngest children.
He was described by Acerbo Morena as of medium height and compact build, with a round, somewhat ruddy face and hair so fair as to be almost white. He was eloquent, intelligent and good-humoured, generous but not extravagant. Dynastically, he was extremely well-connected: a nephew of Pope Callixtus II, a half-brother of Amadeus III of Savoy, a brother-in-law of Louis VI of France (through his half-sister Adelasia of Moriana), and cousin of Alfonso VII of Castile.