According to Bede, in 695, Seaxburh organised the movement (or translation) of Æthelthryth's remains to a marble sarcophagus, after they had lain for sixteen years in a common grave. On opening the grave, it was discovered that her body was miraculously preserved. The legend is described in Bede's "Ecclesiastical History of the English People", which celebrates the saintly virtues of Æthelthryth, but speaks less highly of Seaxburh, referring only to her marriage, succession as abbess and translation of her sister's relics. The date of Seaxburh's death at Ely is not known. The surviving versions of the "Vita Sexburge", compiled after 1106, describe her early life, marriage to Eorcenberht, retirement from secular life and her final years as a nun and abbess at Ely.