Sarah Davis Colby was born 4 June 1714 in Haverhill, Essex County, Massachusetts, United States to William Davis (1674-1753) and Mary Kelly (1678-1736) and died 3 June 1755 Haverhill, Essex County, Massachusetts, United States of unspecified causes. She married Isaac Colby (1712-1785) 25 April 1734 in Haverhill, Essex County, Massachusetts.
Children
| Name | Birth | Death | Joined with |
| Anthony Colby (1735-1744) | |||
| William Bolby (1735-1735) | |||
| Elizabeth Colby (1736-) | |||
| Sarah Colby (1739-1809) | |||
| William Davis Colby (1742-1795) | 15 March 1741 Newbury, Essex County, Massachusetts, United States | 1812 Hopkinton, Merrimack County, New Hampshire, United States | Elizabeth Straw (1752-1840) |
| Anthony Colby (1744-1783) | |||
| Isaac Colby (1746-1816) | |||
| Benjamin Colby (1750-1816) | |||
| Mary Colby (1753-) | |||
| Abigail Colby (1755-1831) | |||
Siblings