So far as I can see, every single one of those references traces back to Mr Pole's set (or Poll; both spellings appear), though only a very few (those at folkinfo, for example) acknowledge him. I haven't looked at every text in detail, but they are all the same song (actually, all the same version of the song),though many with mistakes of transcription. I hadn't known, or had forgotten, that Fairport Convention recorded an arrangement of it as well, and a lot of websites have copied the text from them. Others are copied from the Young Tradition arrangement, and a few from Brass Monkey.

No help to be got in that direction, then. Whether Mr Poll had misheard "joyful", or whether RVW misheard him; or whether he had a specific meaning in mind, I wouldn't like to guess, though the last possibility seems the least likely. I don't know of any broadside or songster texts.