Question: Who is the paternal grandfather of Isabella Of Valois, Duchess Of Bourbon?
Sentence (from "Isabella of Valois, Duchess of Bourbon"): Isabella of Valois, Duchess of Bourbon or "Isabella of France" (1313 – 26 July 1383), was a Petit Fille of France, and a daughter of Charles of Valois by his third wife Mahaut of Châtillon.
Relevant evidence: Yes