William Mumford was born in Essex on 7 April 1870, the son of trainer John Mumford, who ran a substantial yard of around 27 horses. He assisted his father and afterwards his mother at the family stable at St Etheldreda House, Exning.
He rode as a National Hunt jockey, his first winner coming on Partisan in a match race for the Croydon Selling Hurdle at Croydon on 11 March 1890, scoring in a “canter” by 15 lengths.
His second win was gained on Chivalry in the Spring Handicap Chase at Aldershot on 5 May 1891. According to the Sporting Life’s report, the winner was “capitally ridden by W. Mumford”. They won again at Lingfield Park two weeks later.
Having received permission to own, train and ride his horses, by 1895 he was training a string of 15 at Primrose Cottage, Newmarket.
He rode a total of nine winners under NH rules, the last of them on Kilometre in the Links Plate Hurdle at Newmarket on 29 November 1899.
He served in the ranks with the Imperial Yeomanry in the Transvaal during the first half of the Boer War.
Returning briefly to race-riding, he had his final mount on Sapphira, finishing fifth of eight runners in the Spring Handicap Hurdle at Maiden Erlegh in 26 March 1902.
He held a licence to train on the Flat from 1909 to 1916, most of the time in Newmarket but during 1914 and 1915 he was based at Streatley where he trained for himself. He served with the Remounts in the latter part of the First World War, then trained for a time in India. After ceasing training he lived in India for a good many years but eventually returned to England.
William Mumford died at Stud Farm, Wootton Wawen, Warwickshire on 23 April 1959, aged 89. He left £9,285.
Additional information sourced from ‘A Biographical Dictionary of Racehorse Trainers in Berkshire 1850-1939’ by David Boyd, published in 1998.
Following his initial win on Partisan in a match at Croydon in March 1890, William rode his second winner, Chivalry, to victory at Aldershot on May 5, 1891.