Question: Who is Mary Of Burgundy, Duchess Of Savoy's mother-in-law?
Sentence (from "Mary of Burgundy, Duchess of Savoy"): Mary of Burgundy (French: Marie de Bourgogne; 1386–1428) was a Duchess of Savoy by her marriage to Amadeus VIII of Savoy, later known as Antipope Felix V.
Relevant evidence: Yes