The fourth book of the "Ecclesiastical History of the English People", completed by the Northumbrian monk Bede in 731, celebrates the monastery at Ely and focuses on Æthelthryth's piety and the translation of her relics. Bede does not mention the matrilinear succession established at Ely by Æthelthryth, where power passed in turn to Seaxburh before subsequently transferring to Seaxburh's daughter Eormenhild and to her granddaughter, Werburh. He praises the virtues of Æthelthryth, a princess who was married twice but still preserved her virginity. Seaxburh receives little praise from Bede, as she had borne children before becoming a nun. He only mentions Seaxburh's marriage to Eorcenberht, succession as abbess and translation of her sister's relics.