Thomas Colby was born 30 December 1567 in Sempringham, Lincolnshire, England to Matthew Colby (1530-1591) and Mary Colby (1532-1591) and died 9 December 1625 Horbling, Lincolnshire, England of unspecified causes. He married Ann Jackson (1574-1681) 18 May 1590 in Sempringham, Lincolnshire, England.
Children
| Name | Birth | Death | Joined with |
| Ann Agnes Colby (1591-) | |||
| Elizabeth Colby (1593-1594) | |||
| Thomas Colby (1593-) | |||
| William Colby (1594-1596) | |||
| Margaret Colby (1597-1625) | |||
| William Colby (1598-1638) | |||
| Thomas Colby (1598-) | |||
| Abraham Colby (1600-1625) | |||
| Richard Colby (1602-) | |||
| Thomas Colby (1602-1655) | |||
| Edward Colby (1605-1606) | |||
| Anthony Colby (1605-1660) | September 1605 Horbling, Lincolnshire, England, United Kingdom | 11 February 1660 Amesbury, Essex County, Massachusetts, United States | Susannah Haddon (1610-1689) |
| Matthew Colby (1607-1636) | |||
| Robert Colby (1614-1630) | |||
Siblings
| Name | Birth | Death | Joined with |
| Thomas Colby (1567-1625) | 30 December 1567 Sempringham, Lincolnshire, England | 9 December 1625 Horbling, Lincolnshire, England | Ann Jackson (1574-1681) |