William Davidson was born 24 December 1807 in Crail, Fife, Scotland, United Kingdom and died 25 May 1878 Miln Creek, New South Wales, Australia of unspecified causes. He married Janet Graham (?-?) 22 August 1834 in Clackmannanshire, Scotland, United Kingdom. He married Janet Blair (1828-1859) 1849 in Alva, Clackmannanshire, Scotland, United Kingdom.
Children
| Name | Birth | Death | Joined with |
| John Davidson (1835-1929) | |||
| Archibald Graham Davidson (1837-1905) | 30 July 1837 Clackmannanshire, Scotland, United Kingdom | 30 October 1905 Glen Innes, New South Wales, Australia | Mary Ann McHattan (1845-1908) |
| William Davidson (1842-1932) | 27 January 1842 Scotland, United Kingdom | 4 June 1932 Walcha, New South Wales, Australia | Jessie Robson (1839-1923) |
| David Davidson (1843-1890) | |||
| Anna Henderson Davidson (1845-1881) | 13 December 1845 Scotland, United Kingdom | 11 August 1881 Uralla, New South Wales, Australia | William White (c1836-1899) |
| Name | Birth | Death | Joined with |
| Flint Ramsay Davidson (1849-1926) | |||
| Janet Blair Davidson (1856-1939) | |||
| Elizabeth Davidson (1858-1923) | |||
Footnotes (including sources)
| ‡ General |