She was known as "The Lady of Mercia". She fortified the small town of Warwick against invasion in 914 A.D. In 1068, the first castle of Warwick was built there inside her fortifications. (C-326, 1387)
Elthelflaed married Ethelred Ealdorman of Mercia.
1Diana Trenchard to Gen-Medieval@rootsweb.com E-mail letter dated 1/4/1998 sourced primarily from "Kings, Rulers and Statesmen" Guinness, c1978 at firstname.lastname@example.org (C-1387).
2The Official Website of the British Monarchy at http://www.royal.gov.uk/output/Page428.asp.