Family: Robert Sibley, (Architect Surveyor) / Mary Ann Knowsley (F2281)
m. 18 Apr 1818The parent family of Robert Charles George Sibley is the Family.
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 | Robert Sibley, (Architect Surveyor) (1790-1849) |
 | Mary Ann Knowsley (1789-1862) |
| Robert Charles George Sibley (1824-1906) |
| Thomas Harmer Sibley (1828-1915) |
| Septimus William Sibley (1831-1893) |