Marsh's patrons included the King Edward VII and the Duke of Hamilton, providing Watts with a string of top class rides. His major winners for the Duke included Ossian (St Leger) and Miss Jummy (1000 Guineas, Oaks), while the Prince provided him with probably his best horse, the Derby winner Persimmon. Watts was less fortunate with the Prince's second Derby winner, Diamond Jubilee, who loathed the jockey and tried to attack him before the Coventry Stakes at Royal Ascot. Watts subsequently gave up the ride on the temperamental colt.
