The Dictionary of Australasian Biography/Clark, John Howard
Clark, John Howard, son of Francis Clark, of Birmingham, by his marriage with the sister of Sir Rowland Hill, was born at Birmingham on Jan. 15th, 1830. He emigrated to Adelaide with his father and mother in 1850, and joined the former in the firm of Francis Clark & Son, accountants and merchants. He assisted in the formation of the Adelaide Philosophical Society and the South Australian Institute, and was secretary of the former for seven years. In 1865 he joined the proprietary of the South Australia Register, and acted as commercial manager, and in 1870 became editor. Mr. Clark (who was well known as a press contributor under the nom de plume of "Geoffrey Crabthorn") died at Port Willunga, on May 20th, 1878.