Agnès was the daughter of Emmery de la Greve and Agnès de la Faye. The date and place of her birth have not been found.
Her husband was Sébrand I de Chabot. They were married, but the date and place have not been found. Their six known children were Thibaut II (1105-?), Sébrand (?-1198), Garnier (?-?), Pierre (?-?), Améline (?-?) and NN (?-?).