Question: Who is the maternal grandfather of Beatrice Of Sicily, Latin Empress?
Sentence (from "Beatrice of Provence"): Beatrice of Provence (c. 122923 September 1267), was ruling Countess of Provence and Forcalquier from 1245 until her death, as well as Countess of Anjou and Maine, Queen of Sicily and Naples by marriage to Charles I of Naples.
Relevant evidence: No