William married Janet "Jessie" McFarlane on 31 Aug 1840 in Greyfriars Kirk, Edinburgh, Midlothian, Scotland. Janet (daughter of John McFarlane, JoM19 and Margaret Leishman) was born on 27 Jul 1820 in Springfield, Fifeshire, Scotland; was christened on 3 Aug 1820 in Cupar, Fifeshire, Scotland; died on 30 Oct 1887 in Dergholm, Victoria, Australia; was buried on 1 Nov 1887. [Group Sheet] [Family Chart]

1. William Neilson, J.P. was born on 7 Sep 1842 in Paisley, Renfrewshire, Scotland; died on 11 Dec 1916 in Penola, South Australia, Australia.
2. John Neilson was born on 15 Jan 1844 in Stranraer, Wigtownshire, Scotland; died on 16 Jul 1922 in Leongatha, Gippsland, Victoria, Australia.