English, from the vocabulary word. Often a nickname, occasionally ironically for someone of a "less-than-happy" disposition! ONC suggests the name is a 20th century one but the IGI shows frequent use as a given name in Britain, especially in England, from a much earlier date.

A correspondent [RJ] reports that it is used as a given name quite often in Norfolk, England. We also know of one use in Southern Rhodesia [now Zimbabwe].