Question: What is the date of death of Mieszko I Tanglefoot's mother?
Sentence (from "Agnes of Babenberg"): "Not to be confused with Agnes of Brandenburg"
Agnes of Babenberg (b. ca. 1108/13 – d. 24/25 January 1163), was a German noblewoman, a scion of the Franconian House of Babenberg and by marriage High Duchess of Poland and Duchess of Silesia.
Relevant evidence: Yes