Question: When did Louis, Duke Of Brittany (1707–1712)'s mother die?
Sentence (from "Marie Adélaïde of Savoy"): Marie Adélaïde of Savoy, Princess of Savoy (6 December 1685 – 12 February 1712) was the wife of Louis, Dauphin of France, Duke of Burgundy.
Relevant evidence: Yes