Ethelyn

Also an independent name and spelt Ethelyn. In fact, Ethelyn was the spelling of the name when it featured irregularly in the American top 1,000 for girls from the end of the 19th century to the 1930s. [noted -ed]

An ancient Greek name, Ethalyn, Ethalia, Ethalis, Ethalos, Ethalion, Ethalidas, Ethalides, etc. In Greek mythology, Ethalion (Aithalion) was the pirate who kidnapped Dionysos.