Catherine Winthrop was born 9 March 1711 in Boston, Massachusetts, United States to John Winthrop (1681-1747) and Ann Dudley (1684-1776) and died 10 January 1781 Salem, Massachusetts, United States of unspecified causes. She married Samuel Browne (1708-1743) 30 March 1732 . She married Epes Sargent (1690-1762) 10 August 1744 in Salem, Essex County, Massachusetts, United States.
Children
| Name | Birth | Death | Joined with |
| William Browne (1736-) | |||
| Anne Browne (1738-) | |||
| Abigail Browne (1740-1776) | |||
| Name | Birth | Death | Joined with |
| Paul Dudley Sargent (c1745-1828) | 1745 Salem, Essex County, Massachusetts, United States | 28 September 1828 Sullivan, Hancock County, Maine, United States | Lucy Smith Sanders (1752-1840) |
| Ann Sargent (1746-) | |||
| Catherine Sargent (1747-) | |||
| Mary Sargent (1748-1760) | |||
| John Sargent (1750-1824) | 2 December 1750 Salem, Essex County, Massachusetts, United States | 24 January 1824 Barrington, Shelburne County, Nova Scotia, Canada | Margaret Whitney (1749-1824) |