Peter Bent III was born 20 March 1707 in Marlborough, Middlesex County, Massachusetts to Peter Bent (1653-1717) and Abigail Barnes (1683-1768) and died 11 March 1798 Marlborough, Middlesex County, Massachusetts of unspecified causes. He married Mary Temple (1709-1760) 18 April 1727 in Sudbury, Middlesex County, Massachusetts.
Children
| Name | Birth | Death | Joined with |
| Peter Bent (1733-1740) | |||
| Sarah Bent (1735-1825) | |||
| Mary Bent (1737-1833) | 18 April 1737 Marlborough, Worcester County, Massachusetts | 5 January 1833 Southborough, Worcester County, Massachusetts | Josiah Fay (1731-1776) |
| Jabez Bent (1738-1740) | |||
| Patience Bent (1741-1837) | |||
| Deborah Bent (1742-1745) | |||
| Ann Bent (1744-) | |||
| Anne Bent (1745-1828) | |||
| Peter Bent (1746-) | |||
| Abigail Bent (1749-1837) | |||
Siblings
| Name | Birth | Death | Joined with |
| Peter Bent (1702-1798) | 20 March 1707 Marlborough, Middlesex County, Massachusetts | 11 March 1798 Marlborough, Middlesex County, Massachusetts | Mary Temple (1709-1760) |
| Beulah Bent (1705-1783) | |||
| John Bent (1708-) | |||
| Abigail Bent (1710-1787) | |||
| Elizabeth Bent (1712-1798) | |||
| Jabez Bent (1716-) | |||