Question: What is the date of death of Richeza Of Poland, Queen Of Castile's mother?
Sentence (from "Richeza of Poland, Queen of Castile"): Richeza was the third child and only daughter of Władysław II the Exile, the High Duke of Poland and ruler of Silesia, by his wife Agnes of Babenberg, daughter of Margrave Leopold III of Austria and half-sister of King Conrad III of Germany.
Relevant evidence: Yes