Biography
Thomas McGuiness was born 11 July 1837 in Bigga, New South Wales, Australia to Thomas Maginnis (1810-1862) and Sarah Blackman (1815-1904) and died 8 May 1921 Woods Flat, Woodstock, New South Wales, Australia of unspecified causes.
Children
| Name | Birth | Death | Joined with |
| John Thomas Picker (1856-1944) | 21 June 1856 Binda, New South Wales, Australia | 20 November 1944 Blayney, New South Wales, Australia | Elizabeth Stenton (1850-1909) |
| Name | Birth | Death | Joined with |
| James Andrew McGuiness (1873-1937) | 1873 Burrowa, New South Wales, Australia | 26 July 1937 Nyngan, New South Wales, Australia | Amelia Elizabeth Brown (1901-1976) |
| Ernest McGuiness (1875-1877) | 11 July 1875 Fish River, New South Wales, Australia | 13 July 1877 Carcoar, New South Wales, Australia | |
| Thomas McGuiness (1878-1879) | |||
| Emily Jane McGuiness (1880-1970) | 25 November 1880 Carcoar, New South Wales, Australia | 16 June 1970 Blackmans Swamp Creek, Orange, New South Wales, Australia | John Michael Drady (1874-1941) |
| Angus Alfred McGuiness (1883-1948) | 20 September 1883 Carcoar, New South Wales, Australia | 31 August 1948 Orange, New South Wales, Australia | |
| John McGuiness (1887-1960) | |||
| Percy Forbes McGuiness (1890-1962) | |||
| Alfred Sydney McGuiness (1893-1918) | 20 December 1893 Carcoar, New South Wales, Australia | 31 August 1918 France | |