Mary Sloper Brewster was born 11 February 1663 in Portsmouth, Rockingham County, New Hampshire to Richard Sloper (1630-1716) and Mary Sherbourne (1640-1718) and died 22 September 1744 Portsmouth, Rockingham County, New Hampshire of unspecified causes. She married John Bruster (1667-1726) 1689 .
Children
| Name | Birth | Death | Joined with |
| John Brewster (1689-1743) | |||
| Samuel Sloper Brewster (1691-1754) | 30 April 1691 Portsmouth, Rockingham County, New Hampshire | 21 November 1754 Portsmouth, Rockingham County, New Hampshire | Margaret Waterhouse (1708-1754) |
| Abigail Brewster (1694-) | |||
| Joshua Brewster (1695-1779) | |||
| Joseph Brewster (1701-1766) | |||
Siblings