Mary of Brabant
Mary of Brabant (1325–1399) was the third daughter of Duke John III of Brabant and Mary of Évreux. In 1347 she married Reginald III the Fat, Duke of Guelders. When her brother-in-law Edward seized Guelders and imprisoned Reginald in 1361, she settled at her dower castle of Turnhout; Reginald was freed in 1371 but died soon afterwards.
Mary founded Corsendonk Priory in 1395. Her claims to Brabant were settled by the Peace of Ath, and she died at Turnhout in 1399.