Question: When is Matilda Of Boulogne, Duchess Of Brabant's mother's birthday?
Sentence (from "Marie I, Countess of Boulogne"): Marie I or Mary (1136 – 25 July 1182 in St Austrebert, Montreuil, France) was the "suo jure" Countess of Boulogne from 1159 to 1170.
Relevant evidence: Yes