See also thread Help: Seeking old Yorkshire ballad where the same person asked the same question a few days later, having been discouraged by the silly responses he initially got here; and got a whole series of more considered answers, including the Child reference. They degenerated into irrelevant speculation after a while, but the essential information is there. This thread really ought to have been combined with the slightly later one at the time, but there are many such orphans lurking about in this place.