Mathe was the daughter of unknown parents. The date and place of her birth have not been found.
Her husband was Bernard VIII de Comminges, who she married in 1316. The place has not been found. Their four known children were Jeanne (?-?), Aliénor (1329-1402), Cécile (?-?) and Eléonore (?-?).
Note 1
fille de Bernard, baron de l’Isle-Jourdain, et de Marguerite de Foix