[1] Horne was born in Chiswick, Middlesex and was admitted as an attorney in England in 1833.
[1] Horne was elected to the Victorian Legislative Council for the Belfast and Warrnambool in September 1854, a position he held until March 1856.
In November 1856 Horne was elected to the Victorian Legislative Assembly for the Electoral district of Warrnambool, he resigned in February 1861.
[1] From 11 March 1857 to 29 April 1857 Horne was Commissioner of Crown Lands and Survey and Surveyor General of Victoria; he was also commissioner Public Works 21 December 1858 to 27 October 1859.
[1] He was elected member of the Nelson Provincial Council for the Grey electorate and served for 13 months (1868–1869).