Question: What is the date of death of Isabella Of Villehardouin's father?
Sentence (from "William of Villehardouin"): William of Villehardouin ("Guillaume de Villehardouin"; died 1 May 1278) was the last Villehardouin prince of Achaea (as William II) and ruled the principality at the height of its power and influence(1246 - 1278).
Relevant evidence: Yes