Today I learnt that Henry VIII didn’t write Greensleeves and that it was a “romantic myth”:
The piece is based on an Italian style of composition that did not reach England until after Henry’s death, making it more likely to be Elizabethan in origin.
Alison Weir, Henry VIII: The King and His Court (New York: Ballantine Books, 2001): 131 via Wikipedia
One of those things I’d picked up as a child and hadn’t thought to look up since. So many lies!