Mary Ryder was born circa 1766 in Chatham, Barnstable County, Massachusetts to James Ryder (1741-1780) and Tabitha Eldredge (1745-) and died circa 1822 of unspecified causes. She married Knowles Godfrey (1762-1794) 9 October 1786 in Chatham, Barnstable County, Massachusetts.
Children
| Name | Birth | Death | Joined with |
| James Ryder Godfrey (1788-) | |||
| Knowles Godfrey (1790-) | |||
| Jerusha Godfrey (1792-) | |||
| Benjamin Godfrey (1794-1862) | 20 May 1794 Chatham, Barnstable County, Massachusetts, United States | 13 August 1862 Godfrey, Madison County, Illinois, United States | Harriet Cooper (1801-1838) Rebecca E Petit (1818-) |
Siblings
| Name | Birth | Death | Joined with |
| Mary Ryder (1766-1822) | 1766 Chatham, Barnstable County, Massachusetts | 1822 | Knowles Godfrey (1762-1794) |
| Enoch Ryder (1773-1861) | |||
| Priscilla Ryder (1775-) | |||