Bartholomew Flegg was born circa 1585 in Whinbergh, Norfolk, England to John Flagg (1555-1617) and Aveline Bennington .
Children
| Name | Birth | Death | Joined with |
| Thomas Flagg (1621-1698) | September 1615 Hardingham, Norfolk, England | 6 February 1698 Watertown, Middlesex County, Massachusetts | Marabelle Underwood (1619-1702) |
Siblings