A Riddle?

For reasons unknown I found myself reciting "Humpty Dumpty" as I went about my morning,which in turn made me curious about any historical connections. The first known publications of "Humpty Dumpty" did not use the term humpty dumpty,the term was first used in the 17th century and referred to brandy boiled with ale. In the 1700's it was used to describe a short,clumsy person,it was also used as a term for someone who had too much to drink. In the riddle it has none of these meanings and the question posed was "what is something that if rolled off a wall could not be mended by any number of people...the answer is an egg",which explains Humpty's egg like appearance.
A couple of possible theories to the origin of the rhyme are 1. during the English Civil War a man was stationed on the walls with a cannon nicknamed "Humpty Dumpty". The cannon eventually fell from the wall and no amount of men were able to lift it back into place. 2. Humpty Dumpty may have represented King Richard III,called the humpbacked king. The king fell from his horse in battle and was hacked to pieces,never to be mended again. If today's post served no other purpose,at least it freed me of the rhyme!