William Mentor Graham was born 1 August 1800 in Greensburg, Kentucky, United States to Jeremiah Graham (1780-1858) and Mary Owens (1779-1855) and died 16 August 1886 Blunt, South Dakota, United States of unspecified causes.
Children
| Name | Birth | Death | Joined with |
| Harrison Lincoln Graham (1842-1906) | 17 June 1842 Petersburg, Virginia, United States | 4 July 1906 Mount Pulaski, Illinois, United States | Melissa Hale Blane (1841-1926) |
Siblings
| Name | Birth | Death | Joined with |
| William Mentor Graham (1800-1886) | 1 August 1800 Greensburg, Kentucky, United States | 16 August 1886 Blunt, South Dakota, United States | Sarah Rafferty (1803-1869) |
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