aka Elftrudis (Williamson, David. Debrett's kings and queens of Britain. Topsfield, Mass. : Salem House Publishers, 1986, pg. 219). aka Ethelwida (Browning, Charles H. Americans of royal descent. 7th ed. Baltimore : Genealogical Pub. Co., 1986, pg. 189). Buried St. Peters Abbey, Ghent, Belgium (web site: Directory of royal genealogical data).
aka Aelfthryth (www site Paul B. McBride's genealogy page).
aka AEfthryth, Burke calls her Ethelwida, other Elfrida (web site : Directory of royal genealogical data).