Agnes was the daughter of unknown parents. The date and place of her birth have not been found.
Her husband was Olivier I de Rougé. They were married, but the date and place have not been found. Their five known children were Olivier II (<1203-<1206), Egaré (c1203-?), Bonabes II (>1206-1252), Béatrix (?-<1203) and Péronelle (?-1203).