More info about the name "Ethelyn"
Ethelyn is diminutive of Ethel. Ethel originatel in Old English language and means "graceful and noble woman". As a feminine given name it has been in use since the 19th century and was popularized by William Makepeace Thackeray in his novel The Newcomes. Ethel is also the name of several places in the United States. As a feminine given name it has been rather rare lately.