Question: Where did Isabella, Countess Of Vertus's father die?
Sentence (from "John II of France"): When John II came to power, France was facing several disasters: the Black Death, which killed nearly half of its population; popular revolts known as "Jacqueries"; free companies ("Grandes Compagnies") of routiers who plundered the country; and English aggression that resulted in catastrophic military losses, including the Battle of Poitiers of 1356, in which John was captured.
Relevant evidence: No