Thomas III of Piedmont

He was the eldest son of Thomas II of Savoy and Beatrice di Fieschi, niece of Pope Innocent IV.

When his first cousin Boniface, Count of Savoy died in 1263, the 15-year-old Thomas regarded himself as the successor of the deceased, and claimed the county and the headship of the house.

After Peter's death in 1268, Thomas continued his claim although Philip of Savoy, archbishop of Lyon, the youngest surviving brother of his father and also sonless, succeeded in the county and was recognized.

Philip's will charged his niece Eleanor of Provence and her son King Edward I of England with the inheritance of Savoy.

Thomas III was fatally wounded in a border dispute with Humbert I of Viennois in 1282.