John Alexander (Jack) Foyster (1893-1988), mineral sands mining entrepreneur and horse-racing enthusiast, was born on 26 November 1893 at Mullamuddy, near Mudgee, New South Wales, fifth, and second surviving, of eight children of William Alfred Foyster, dairyman and former schoolteacher, and his wife Margaret, née McLeod, both born in New South Wales. In 1906 the Foyster family moved to Myrtle Creek, in the Richmond River district, and in 1913 to Crabbes Creek, in the Tweed River district. Jack later grew sugar cane and grazed cattle, and worked in Sydney for a time as a hairdresser. On 16 June 1928 at St John’s Church of England, Darlinghurst, he married 17-year-old Olga May Easterbrook. They had four sons. Travelling periodically to Canadian Lead, near Gulgong, to mine for gold, he acquired a knowledge of mining techniques.