Thomas Shadwell and the great Restoration poet, John Dryden, commenced as friends and collaborators. Later they had a dramatic falling-out over artistic and political views, and this conflict was publicized in writing. Dryden lampooned Shadwell in his celebrated satire, Mac Flecknoe, which was written in 1678, but not not published until 1682. Shadwell's riposte was a scurrilous diatribe, the Medal of John Bayes.