Pet form of Judith, recorded from the 17th century. It was the name adopted by the singer and film star Judy Garland (1922–69, original name Frances Gumm), and has since increasingly been used as an independent name.
English and Welsh: patronymic from the Middle English personal name Jon(e) (see John). The surname is especially common in Wales and southern central England. In North America this name has absorbed various cognate and like-sounding surnames from other languages. (For forms, see Hanks and Hodges 1988).