Cécile was the daughter of Bertrand de l'Hya but her mother is unknown. The date and place of her birth have not been found.
Her husband was Raymond de Rouget, who she married on 3 MAR 1364. The place has not been found. Their seven known children were Hélène (?-?), Arnaud (?-?), Jean (?-?), Isabeau (?-?), Bernard (?->1424), Hugues (?-?) and Guillaume (?-?).