Princess Marie Adélaïde of Savoy ( 6 December 1685 -- 12 February 1712 ) was the wife of Louis , Dauphin of France , Duke of Burgundy .
Marie Adélaïde of Savoy ( 6 December 1685 -- 12 February 1712 ) was born a Princess of Savoy and was the wife of Louis , Duke of Burgundy .