The Cutty Wren has been claimed to date from the Peasants Revolt in the 14th century, but it's very questionable if that's actually true, both as regards its age or its protest aspect.

Still it's a good story to have in mind when singing it.

But the couplet "When Adam Delved and Eve Span,
                            Who was then the gentleman"
does appear to date from the Peasants Revolt, since it was first recorded as being used in a sermon to tge rebels by the priest John Ball, in a book written only a few years later, Thomas Walsingham's Historia Anglicana.