Etheldreda, a Saxon princess, whose name, shortened into St. Audrey, was given to a certain kind of lace, whence “tawdry”; she took refuge from the married state in the monastery of St. Abb's Head, and afterwards founded a monastery in the Isle of Ely (630‒679).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Ethelbert * Ethelred I.