Mary Ann Hobbs was born 1837 in Wisemans Ferry, New South Wales, Australia to Joseph Hobbs (1806-1879) and Elizabeth Douglass (c1813-1888) and died 8 April 1913 Mt Pleasant Maraylya, New South Wales, Australia of unspecified causes. She married William Grono (1833-1910) 1 October 1856 in Windsor, New South Wales, Australia.
Children
| Name | Birth | Death | Joined with |
| Thomas Joseph Grono (1857-1934) | |||
| Mary Jane Grono (1859-?) | |||
| Esther Maria Grono (1860-1894) | |||
| Matilda Jane Grono (1863-1897) | |||
| Joel Grono (1864-1864) | |||
| Joseph Grono (1864-1864) | |||
| Sophia Grono (1867-1928) | |||
| Elizabeth Grono (1869-1952) | |||
| Catherine Grono (1871-1951) | |||
| Eleanor Grono (1872-?) | |||
| Maria Jane Grono (1874-1924) | |||
| Reuben Charles Grono (1875-1963) | 28 November 1875 Cattai Creek, New South Wales, Australia | 27 June 1963 Parramatta, New South Wales, Australia | Effie Mignonette L Taylor (1872-1950) |