John Sickles was born 25 March 1804 in Three Rivers, Prince Edward Island, Canada to Dembo Sickles (1762-1845) and Mary Moore (1762-1848) and died 12 February 1893 Lower Montague, Prince Edward Island, Canada of unspecified causes.
Children
| Name | Birth | Death | Joined with |
| William Benjamin Sickles (1838-1911) | 18 February 1838 Three Rivers, Prince Edward Island, Canada | 8 March 1911 Montague, Prince Edward Island, Canada | Hannah Colecroft (1859-1930) |
Siblings
| Name | Birth | Death | Joined with |
| John Sickles (1804-1893) | 25 March 1804 Three Rivers, Prince Edward Island, Canada | 12 February 1893 Lower Montague, Prince Edward Island, Canada | Louisa Martin (1814-1887) |
| Mary Sickles (1807-1843) | 8 February 1807 Charlottetown, Nova Scotia, Canada | 9 March 1843 Amherst, Nova Scotia, Canada | James John Jackson (1801-1888) |