Thomas II, (c. 1199 - 1259) was the regent of the County of Savoy when his nephew, Boniface, was fighting abroad. He was also the Count of Flanders (1237 - 1244) and a count in Piedmont (1244 - 1259).
married
- 1. Joan of Constantinople, (died 1244), Countess of Flanders-Hainaut, daughter of Baldwin I of Constantinople
- 2. Beatrice of Fiechi, (died 1283), niece of Pope Innocent IV and had 2 children:
- 1. Thomas (III) (died 1282), pretender of Count of Savoy, married in 1274 to Guia of Burgundy, the step-daughter of Philip I of Savoy and had 5 children:
- 1. Philip, first of Cadet line of Savoy-Achaea, lasting from 1285 to 1418
- 2. Peter
- 3. Thomas
- 4. Amadeus
- 5. William
- 2. Amedeo
