Betsey Mosher Cook was born 20 September 1794 in New Hartford, Oneida County, New York, United States to Josiah Mosher (1757-1847) and Rebecca Doolittle (1769-1832) and died 11 June 1875 Grand Rapids, Kent County, Michigan, United States of unspecified causes. She married Archibald Cook (1792-1866) 1 May 1814 in New Hartford, Oneida County, New York.
Children
| Name | Birth | Death | Joined with |
| Celia Ann Cook (1815-1860) | |||
| Jane Eliza Cook (1816-1895) | |||
| Edward Stephen Cook (1818-1898) | |||
| William Newton Cook (1821-1913) | |||
| Josiah Mosher Cook (1823-1872) | |||
| Harriet Elizabeth Cook (1824-1898) | 7 November 1824 Whitesborough, Oneida County, New York, United States | 5 November 1898 Salt Lake City, Salt Lake County, Utah, United States | Brigham Young (1801-1877) |
| Henry A Cook (1827-1889) | |||
Siblings