DCG, for an untypical balla(r)d it sure is widespread and old. Dates back to at least about 1663 and is found all over the British Isles and in Canada. The format AAAB admittedly is not the commonest of formats but there are other examples. It comes from a fairly sophisticated 17th century broadside, but it has lasted well in oral tradition with a little help from print from time to time.