 Wyatt emigrated to South Australia as surgeon of the ship "John Renwick".He arrived at Adelaide 14 February 1837, and practised there for a short time, in August being appointed city coroner.He served as the third interim part-time Protector of Aborigines from 1837 until 1839, replacing Captain Walter Bromley, who had been dismissed after being criticised by "The Register" and was afterwards found drowned in the River Torrens.