John Overton was born 3 May 1838 in Kurrajong, New South Wales, Australia to James Overton (c1798-1876) and Mary Turner (1820-1901) and died 27 May 1924 Schofield, New South Wales, Australia of unspecified causes.
Children
| Name | Birth | Death | Joined with |
| James Overton (1859-1941) | |||
| Elizabeth Overton (1862-1946) | |||
| Alice Jane Overton (1864-1922) | |||
| Sarah Ann Overton (1867-1878) | |||
| William John Overton (1870-1948) | |||
| Mary Ann Overton (1874-1937) | |||
| Clara Overton (1877-1878) | |||
Siblings
| Name | Birth | Death | Joined with |
| John Overton (1838-1924) | 3 May 1838 Kurrajong, New South Wales, Australia | 27 May 1924 Schofield, New South Wales, Australia | Jane Mitchell (1838-1924) |
| James Overton (1842-1878) | 2 June 1842 Kurrajong, New South Wales, Australia | 13 March 1878 Kurrajong, New South Wales, Australia | Elizabeth Coverly (1815-1879) |
| Elizabeth Overton (1844-1875) | |||
| Susannah Overton (1847-1899) | |||
| Mary Ann Overton (1850-1885) | 2 March 1850 Kurrajong, New South Wales, Australia | 14 January 1885 Richmond, New South Wales, Australia | Edward John Mitchell (1834-1890) |
| Anne Overton (1854-1877) | |||
| Margaret Overton (1858-1881) | |||
| Thomas Overton (1861-1952) | |||