Philip I, known as Philip of Savoy (
French: Philippe de Savoie,
Italian: Filippo di Savoia-Acaia) (1278 – 25 September 1334) 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.[1] By that marriage, he became Prince of Achaea, though he had already been lord of Piedmont by inheritance from his father in 1282. He was, however, an authoritative prince and this put him at odds with the baronage of his realm. He tried to placate the barons of
Morea, but was forced to accept a
parliament in 1304. The Greek archonts from
Skorta revolted in 1302. In 1307, King
Charles II of Naples, the suzerain of Achaea, confiscated the principality and gave it to his son, Prince
Philip I of Taranto.
In 1312, Philip married Catherine de la Tour du Pin (died 1337), daughter of
Humbert I of Viennois[2] and had issue: