Philip I of Piedmont
Philip I, known as Philip of Savoy was the lord of Piedmont from 1282 until his death and prince of Achaea between 1301 and 1307. He was the son of Thomas III of Piedmont and Guyonne de Châlon. Philip's first marriage was celebrated in Rome on 12 February 1301 to Isabella of Villehardouin, Princess of Achaea.