[3][4] Eusebia's commemoration is on 16 March; Adalsinda's feast day is 25 December, around the date of her death, by tradition "during the solemnities of Christmas".
[5] Following their father's death in an attack, near Périgueux, c. 652, the sisters' mother, Richtrudis, retired to the Marchiennes Abbey that she and her husband had founded in 630.
[8] Saint Adalsinda[a] (French: Adalsinde),[9] the youngest child of the family, entered Marchiennes Abbey in c. 653, with her mother and sisters.
Gertrudes's widowed daughter, Gerberta –who was Adalbard's mother, and so the sisters' grandmother– was also a nun of Hamay Abbey.
[10][5] Writing in 2007, Dries van den Akker, a Jesuit author and editor stated, "more recent sources, which are based on historical research, give the year 715 as her date of death".
According to Dunbar's 1904 Dictionary of Saintly Women, Queen Nanthild was Eusebia's godmother and had gifted her with the fine estate of Verny near Soissons.
[7][14][15] Before her death, Gertrude named Eusebia her successor and she was duly elected abbess upon her great-grandmother's demise.