Sometime ago I read that the words of the old Hey Diddle Diddle nursery rhyme were in fact a reference to the story of Richard III. There are other theories, of course, including this of Elizabeth I:
“The story goes that Elizabeth, was often called a cat for the treatment of her court, the mice. When Elizabeth’s cousin Lady Catherine Grey eloped with Edward Seymour represented by the dish running away with the spoon, Elizabeth was not particularly impressed. The ‘dish’ and ‘spoon’ of the rhyme are sometimes said to be the Queen’s private server and food taster, but this theory too lacks evidence.” (This extract is from https://treasuryislands.wordpress.com/2011/10/26/origins-hey-diddle-diddle/)
The suggestion that the rhyme might be to do with Richard’s so-called usurpation of the throne connects Sir William Catesby with the cat (the fiddle being to kill the boys in the Tower), the Kingmaker with the cow (no idea about the moon!) Francis Lovell with the dog, and Richard himself as the dish running away with the spoon (anointing spoon at his coronation). Why the Kingmaker is in there, I can’t imagine, for he was dead and gone by 1383, which is when the presumed events of the nursery rhyme took place.
A Google search for Hey Diddle Diddle or Humpty Dumpty with Richard III will bring up numerous sites that repeat/debate/pooh-pooh the likelihood of the rhymes’ origins in Richard’s story.
The king in the above illustration is presumably Henry VII?
Anyway, it’s all an interesting theory, but I do not know how much faith to place in it. Take a look, and see what you think.