Billy Buttons, or the Tailor's Ride to Brentford
Billy Button, or The Hunted Tailor is considered to be the first circus clown act, created by Philip Astley in England in 1768, and later performed by a range of clowns.
The original text
The original circus act was based on a popular tale of a tailor, an inept equestrian, trying to ride a horse to Brentford to vote in an election. The tailor has tremendous difficulty mounting the horse correctly. When he finally succeeds the horse starts off so fast that he falls off. However, as David Carlyon (2016) points out, the "play" was in fact originally created as "a riding, not clown, act; relying on the popular assumption of tailors as physically inept or cowardly" (p. 175). Its use as a farce developed from this original, via its use in circuses then onto the vaufdeville and other stages. It is thus often found as an interlude or afterpiece in 19th century productions, usually billed as a farce.
This act has been performed under numerous names (and possibly incarnations) since the original Astley performances in 1768 - though often simply referred to by the name of the character ("Billy Buttons", or later "Billy Button"). Titles used in South Africa include:
Billy Button, or The Hunted Tailor
Billy Buttons, or the Tailor's Ride to Brentford
Sources
http://www.circushistory.org/Day/Day17.htm
http://archive.pba.org/programming/programs/tiaarchives/587/
David Carlyon 2016. The Education of a Circus Clown: Mentors, Audiences, Mistakes. Palgrave Studies in Theatre and Performance History Springer:Appendix B, p175.