Mary Gunn Whitney was born 20 January 1720 in Westfield, Hampden County, Massachusetts, United States to Daniel Gunn (1687-1748) and Hester Griswold (1689-1761) and died after 1764 of unspecified causes. She married David Whitney (1716-1791) 1739 in Canaan, Litchfield County, Connecticut.
Children
| Name | Birth | Death | Joined with |
| Mary Whitney (1740-1805) | |||
| Esther Whitney (1743-) | |||
| Elizabeth Whitney (1746-) | |||
| Sarah Whitney (1748-) | |||
| Jacob Whitney (1750-) | |||
| Kezia Whitney (1852-) | |||
| Lois Whitney (1756-1824) | |||
| Emelia Whitney (1759-1819) | |||
| Eloise Whitney (1759-) | |||
| David Whitney (1762-1837) | |||
| Roswell Whitney (1764-1830) | 12 September 1764 Poultney, Rutland County, Vermont, United States | 14 March 1830 Benton, Yates County, New York, United States | Phebe Ellsworth (1774-1863) |
Siblings
| Name | Birth | Death | Joined with |
| Esther Gunn (1713-) | |||
| Azubah Gunn (1716-1792) | |||
| Mary Gunn (1720-1764) | 20 January 1720 Westfield, Hampden County, Massachusetts, United States | 1764 | David Whitney (1716-1791) |
| Alexander Gunn (1726-) | |||
| Daniel Gunn (1730-1764) | |||