St. Æthelthryth, the seventh-century abbess of Ely, was one of Anglo-Saxon England's most widely venerated saints. This life of her by Ælfric was written in the last years of the tenth century. Ælfric's collection of saints' lives was edited by Walter W. Skeat, Ælfric's Lives of Saints, Early English Text Society 76. 82. 94, 114 (Oxford, 1881-1900). Old English text from OldEnglishAerobics.net and Introduction to Old English by Peter Baker