1839 - 1873
With his brother Neill Malcolm 13th of Poltalloch, John Malcolm established a cattle station called Poltalloch in South Australia which he sold in 1873 with a second station for £175,000.
Stephen Coppel, ‘Malcolm, John, of Poltalloch (1805–1893)’, Oxford Dictionary of National Biography, Oxford University Press, 2004; online edn, May 2005 [http://www.oxforddnb.com/view/article/62981, accessed 15 Jan 2015]