A Dictionary of Saintly Women/Ada
St. Ada, Dec. 4 (Adeneta, Adna, Adnetta, Adonette, Adrechild, Adrehildis), 6th or 7th century. Abbess. Niece or granddaughter of St. Engelbert, bishop of Le Mans (Nov. 7). She was a nun at Soissons, and Engelbert promoted her to be abbess there, and afterwards transferred her as abbess to the monastery of Pré (St. Julian de Prato) at Le Mans. Bucelinus, Men. Ben. Pétin, Dic. Hag. Dic. des Abbayes. Gynecæum.