Mahaut of Albon Countess Consort of Savoy (1112–1148) Parents Mathilde de Hauteville Guigues III of Albon Children William of Savoy Maud of Savoy Umberto III, Count of Savoy Peter of Savoy Juliana of Savoy Agnes of Savoy John of Savoy Margaret of Savoy Siblings Humbert d'Albon Guigues IV. Garsende of Albon Partners Amadeus III, Count of Savoy