Question: When did Alice De Lusignan, Countess Of Surrey's husband die?
Sentence (from "Alice de Lusignan, Countess of Surrey"): Alice de Lusignan, Countess of Surrey (1224 – 9 February 1256) was a uterine half-sister of King Henry III of England and the wife of John de Warenne, 6th Earl of Surrey.
Relevant evidence: Yes