Question: When did Anne Of Savoy's mother die?
Sentence (from "Yolande of Valois"): Yolande of France (23 September 1434 – 23 August 1478) was a Duchess consort of Savoy by marriage to Duke Amadeus IX of Savoy, and regent of Savoy during the minority of her son Philibert I of Savoy from 1472 until 1478.
Relevant evidence: Yes