Mary Heguembourg Brewster was born 1789 in New Haven County, Connecticut, United States to Charles Louis Heguembourg (1759-1851) and Mercey Clark (1765-1830) and died 1867 New Haven County, Connecticut, United States of unspecified causes. She married James Brewster (1788-1866) 18 September 1810 in New Haven, New Haven County, Connecticut.
Children
| Name | Birth | Death | Joined with |
| Mary Elizabeth Brewster (1812-1867) | |||
| Rebecca D Brewster (1814-1890) | |||
| Joseph Brewster (1816-1895) | 1816 Windham, Windham County, Connecticut, United States | 1895 | Sarah Jane Bunce (1820-1866) |
| James Benjamin Brewster (1817-1902) | |||
| Henry Brewster (1820-) | |||
Siblings