Robert Ambrose Manewell was born 3 April 1877 in Grafton, New South Wales, Australia to George Manewell (1848-1920) and Mary Jane Llewellyn (1854-1906) and died 13 August 1962 Grafton, New South Wales, Australia of unspecified causes. He married Sarah Marsh (1888-1937) 1 April 1908 in Grafton, New South Wales, Australia.
Children
| Name | Birth | Death | Joined with |
| Mary J H Manewell (c1908-1910) | |||
| William Henry George Manewell (1909-1953) | |||
| Lillian M Manewell (c1909-1911) | |||
| Annie Manewell (c1910-1912) | |||
| Wallace James Manewell (1913-1939) | |||
| Josephine Joyce Manewell (1915-1984) | |||
| Wilhemina A Manewell (1917-1931) | |||
Footnotes (including sources)
| ‡ General |