His next event which was his first venture to London, where in September, of the same year, and competing in field of 29 at the Agricultural Hall, Islington, he won the Sir John Astley, 'Champion Gold Medal' and a prize of £60, which included £10 for beating the then world record of 405 miles.
Sir John Dugdale Astley, 3rd Baronet, of Everley (1828–1894), MP for Lincolnshire North 1874–1880
Sir John Dugdale Astley, 3rd Baronet (1828–1894), of Everley, MP for Lincolnshire North 1874–1880
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His father, William Harcourt Isham Mackworth (1806—1872), a younger son of Sir Digby Mackworth, the 3rd Baronet, took the additional surname Dolben after he married Frances, the heiress of Sir John English Dolben, the 4th Baronet.
Two famous jockeys that rode regularly for him were George Fordham and Charlie Wood.