***** Seymour Persse, believed to be the World's oldest trainer. Neville Sellwood, now in England will ride for Persse, who begins his 52nd year as a trainer this month.Eighty - Two Year - Old Henry Seymour Persse, for whom Australian jockey Neville Sellwood will ride in England this season, speaking to a meeting of jockeys, stewards, and trainers at the Savoy Hotel, London. Persse, who is believed to be the world's oldest trainer, will start his 52nd year as trainer when the English season begins on March 24. March 25, 1951.