Cynethryth combines the Old English cyne (royal) and þrȳð (strength). Queen Cynethryth (d. after 798) was the wife of King Offa of Mercia — the only Anglo-Saxon queen to issue coins in her own name, indicating extraordinary political power. She later became abbess of Cookham.
Featured prominently in Anglo-Saxon historical studies.
Cynethryth reduces to one — the number of Mercian queen.