Horatio Silvanus Roberts was born 1823 Red Cross Square in Cripplegate, England, United Kingdom to Horatio Roberts (c1800-1826) and Frances (1802-1889) and died 13 July 1910 Penshurst Street Willoughby, New South Wales, Australia of unspecified causes. He married Mary Ann Cook (1826-1894) 10 November 1846 in Ashfield, New South Wales, Australia.
He arrived Sydney, New South Wales on 29 September 1826 on the Medora.
Children
| Name | Birth | Death | Joined with |
| George Horatio Roberts (1847-1929) | |||
| Harriet Roberts (1848-1851) | |||
| Frances Roberts (1851-1921) | |||
| Thomas William Roberts (1852-1871) | |||
| Alice Rachel Roberts (1854-1895) | |||
| Elizabeth Roberts (1856-1923) | |||
| Mary Jane Roberts (1859-1937) | |||
| Benjamin R Roberts (1860-1945) | |||
| Henry Roberts (1863-1883) | |||
Footnotes (including sources)
| ‡ General |