In June 1852 Horne migrated to the
Colony of Victoria in Australia, travelling as a passenger on the same ship as
William Howitt It was later reported that on the first trip of the escort under Horne's command they returned to Melbourne with "two tons weight of gold". The escort was robbed in 1853 and Horne wrote to
The Argus with his recollections of George Melville, the
bushranger convicted of the crime and hanged. In 1854 he was a Goldfields Commissioner at the Waranga goldrush (during the
Victorian gold rush) and named the township of
Rushworth. During his time there he also reached a peaceful settlement with over 4,000 gold miners who had rioted over the payment of their mining license fee and, in his memoirs, stated that he believed this action, in light of the events at the
Eureka Stockade a few months later, was never adequately recognised. During his time at Rushworth, as part of a "foolhardy business transaction", Horne had invested in blocks of land at nearby
Murchison on the
Goulburn River. But as "the village grew slowly" he was eager to "promote any venture which might bring prosperity to the district" and joined with his friend, Rushworth storekeeper Ludovic Marie in establishing a vineyard on the river near
Nagambie. In his platform of policies was an ambitious proposal for an irrigation system, which was realised with the construction of the
Waranga Basin in the 1900s. He lost the position "as a consequence of departmental changes" and was promised another "by successive Governments" however this did not eventuate. He "wasted three years and upwards, in fruitless expectation", and, with his capital tied up in Goulburn River investments, he applied to the
Royal Literary Fund, of London, where he "was at once recognised, and a handsome assistance transmitted to him by return mail". Horne was the founding President of Melbourne's Garrick Club in the 1850s and at a charitable theatrical fundraiser in 1855 "kindly consented to sing a Spanish Romansa and Serence" between the two short plays. ==London and later life==