Born at the Royal Palace of Turin in December 1685 , Marie Adélaïde was the eldest daughter of Victor Amadeus II , Duke of Savoy since 1675 , and his French wife Anne Marie d'Orléans , a niece of Louis XIV , and the daughter of Philippe I , Duke of Orléans and of Henrietta of England .
Her mother was Anne Marie d'Orléans , a niece of Louis XIV , and the daughter of Philippe , Duke of Orléans and of Henrietta of England .