Benedictine abbess, the daughter of Sts. Adalbald and Rictrudis. She was sent as a child to her great grandmother, St. Gertrude, the abbess of Hamage Abbey in France. Her father had been murdered in 652, and her mother had sent her there for safety. She was elected abbess at the age of twelve, and her mother, by then abbess of Merchiennes, brought her and her community into her care. Eusebia and her nuns later returned to Hamage Abbey.