Notes: Daughter of Anna 1; Queen of Ecgfrith 4, king of the Northumbrians; Abbess of Ely and saint. Note Wihtburg 1, her sister.
BDDAB, p. 30; BEASE, p. 18; CDNB 1:944; DNB 18:19-21 = 6:883-5; Harmer, Writs, p. 555; Alan Thacker, Ęthelthryth (d. 679), ODNB.
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