Mr John Jackson (1769-1845). Pugilist/Boxer. Portrait. Known as 'Gentleman Jackson'. A friend and personal trainer of Lord Byron. Image taken from Boxiana; or Sketches of ancient and modern pugilism; from the days of the reowned Broughton and Slack, to the heroes of the present milling aera! By One of the Fancy i.e. Pierce Egan. With plates. Originally published in G. Smeeton: London, 1812.