Philip I of Piedmont

Philip I
Filippo di Savoia-Acaia
Prince of Achaea
Seal of Philip I of Piedmont as Prince of Achaea
SuccessorPhilip II
Died25 September 1334
SpouseIsabella of Villehardouin
Catherine de la Tour du Pin
DynastyHouse of Savoy
FatherThomas III of Piedmont
MotherGuyonne de Châlon
Coat of arms of the principality of Achaea.
Coat of arms of the lordship and principality of Piedmont.

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:

  • James of Piedmont[3]
  • Eleanor married Manfred V of Saluzzo and had issue.
  • Beatrice married Humbert de Thoire-Villars and had issue.
  • Agnes married John de la Chambre and had issue.
  • Joan married Aymer of Valentinois and had issue.
  • Margarita (daughter from Isabella of Villehardouin) married Renaud de Forez, lord of Malaval
  • Amadeus, Bishop of Maurienne from 1349-1376
  • Thomas, Bishop of Turin from 1351-1360
  • Edward, Archbishop of Tarentaise from 1386-1395
  • Aimone, married Mencia de Ceva, died 1398, was in Savoyard crusade.
  • Alice, married Manfred of Carretto in 1324 and later married Antelme of Miolans. Alice died in 1368.
  • Isabelle, married John, viscount of Maurienne[2]


  1. ^ Longnon 1969, p. 265-266.
  2. ^ a b Cox 1967, p. 376-377.
  3. ^ Cox 1967, p. 23.


  • Bon, Antoine (1969). La Morée franque. Recherches historiques, topographiques et archéologiques sur la principauté d'Achaïe [The Frankish Morea. Historical, Topographic and Archaeological Studies on the Principality of Achaea] (in French). Paris: De Boccard. OCLC 869621129.
  • Cox, Eugene L. (1967). The Green Count of Savoy. Princeton, New Jersey: Princeton University Press. LCCN 67-11030.
  • Longnon, Jean (1969) [1962]. "The Frankish States in Greece, 1204–1311". In Setton, Kenneth M.; Wolff, Robert Lee; Hazard, Harry W. (eds.). A History of the Crusades, Volume II: The Later Crusades, 1189–1311 (Second ed.). Madison, Milwaukee, and London: University of Wisconsin Press. pp. 234–275. ISBN 0-299-04844-6.
  • "Heraldic Trace Petito". Heraldrys Institute Of Rome. 2020–2021.
Regnal titles
Preceded by Prince of Achaea
Succeeded by