title: William South (jockey)
text: # William South (jockey)
  
  William South (c. 1734 - 13 September 1791) was a Derby-winning British jockey. At the age of 54, he won the ninth running of the race on the horse Sir Thomas, trained by Frank Neale and owned by George, Prince of Wales, the future George IV.
  
  ## Major wins
  
  Great Britain
  
  * Epsom Derby - Sir Thomas (1788)
  