Yeah, I think it's something like "God Bless You [or was it Goddamn You?], Harry Mandlebaum ...?


Q, when you said that the Oxford Book of Carols notes that "'God rest you merry' means 'God keep you merry', but the comma after 'merry' is generally misplaced," I'd add "... or omitted."

As for the "ye" being substituted later for "you," it does seem fairly common for "ye" to be used in older (or 'traditional') Christmas carols, e.g., "O Come, All Ye Faithful" and It Came Upon A Midnight Clear." I mean, the King James version of the Bible is all full of "ye's," and many Christian hymns from the 17th, 18th and 19th C were written in that sort of language.
If GRYMG does date back to the 17th C, would it have been unusual for "Ye" to have been used?