Question: When did Beatrice Of Lorraine's mother die?
Sentence (from "Beatrice of Lorraine"): (c. 102018 April 1076) was a stateswoman and marchioness of Tuscany by marriage to Boniface III of Tuscany, and Regent of Tuscany from 1052 until her death during the minority of and in co-regency with her daughter Matilda.
Relevant evidence: No