 Horn also built Wairoa, Aldgate, known for its magnificent gardens and captured in a watercolour by William Tibbits.Horn was born 26 February 1841 at Menaroo (an old name for the Monaro district), New South Wales, to Edward Kirk Horn, a storekeeper, and his wife Emily, née Austin.The family moved to South Australia in 1852, where Horn was educated at the Collegiate School of St Peter.