Béatrice was the daughter of unknown parents. The date and place of her birth have not been found.
Her husband was Hugues III de Campdavaine. They were married, but the date and place have not been found. Their seven known children were Angeline (c1120-?), Ansleme I (1125-c1174), Adélaïde (c1130-?), Enguerrand (?-1150), Hugues (?-1150), Raoul (?-1162) and Béatrix (?-?).