When William Hogarth published his book, Analysis of Beauty, in late 1753, he was swiftly subjected to an astonishingly virulent satirical print campaign by Paul Sandby, one of the most accomplished satirical artists of the time after Hogarth himself. Well-known as a close associate of Hogarth, Joshua Kirby was depicted in several of these prints. In the one below the fiddler standing on the stage behind the “Mountebank” Hogarth is usually identified as Kirby.
The caption reads, in part, “W: his Fidler standing in the Line of Beauty”.
Click through to the British Museum site for a larger image.