Question: Who is the mother-in-law of Agnes Of Aquitaine, Queen Of Aragon And Navarre?
Sentence (from "Agnes of Aquitaine, Queen of Aragon and Navarre"): Agnes of Aquitaine (end of 1072 – 6 June 1097) was a daughter of William VIII, Duke of Aquitaine, and his third wife, Hildegarde of Burgundy, and thus half-sister of Agnes of Aquitaine, Queen of Castile, with whom she is sometimes confused.
Relevant evidence: No