Question: Who is the maternal grandmother of Richard Woodville, 3Rd Earl Rivers?
Sentence (from "Jacquetta of Luxembourg"): Jacquetta of Luxembourg, Countess Rivers (1415/16 – 30 May 1472) was the eldest daughter of Peter I of Luxembourg, Count of Saint-Pol, Conversano and Brienne, and his wife Margaret of Baux (Margherita del Balzo of Andria).
Relevant evidence: Yes