20th-century coinage, of uncertain derivation. It may be a transferred use of a surname (itself of obscure origin). It seems to have been first borne by the American actor Darren McGavin (1922–2006). It came to public notice as the name of a character in the popular American television comedy series Bewitched, made in the 1960s, and has remained steadily popular ever since.
English, Scottish, and northern Irish: distinguishing name (Middle English yunge, yonge ‘young’), for the younger of two bearers of the same personal name, usually distinguishing a younger brother or a son. In Middle English this name is often found with the Anglo-Norman French definite article, for example Robert le Yunge.