I have found a James Gollan (1857-1920), son of of James Gollan and Sarah Lamond, who married a Sarah Campbell at Maclean, NSW in 1878. Their children are: Margaret (b.1879), Christina (B.1881), Isabella (b.1882), Mary (b.1884), Donald A (b.1886), Mary E (b.1888), John G (b.1890), Sarah E (b.1892), James R (b.1894), Lexy M (b.1896), Annie (b.1899). James is the younger brother of my great grand father, John Horston.
I'm compiling a family tree on our side of the Gollan family in NSW, starting with William Gollan (1791-1883) who married Janet Barnett (1809-1869)in Inverness, Scotland in 1829. They emigrated to NSW in or just before 1840. I would be grateful if you have additional information from your side of the family or the pre-Australia periode via this website.