| Children |
| | 1. Lieutenant Gershom FLAGG, b. 16 Apr 1641, Watertown, Middlesex, Massachusetts, United States d. 6 Jul 1690, Wheelwright's Pond: Lee, Strafford, New Hampshire, United States (Age 49 years) |
| | 2. John FLAGG, b. 14 Jun 1643, Watertown, Middlesex, Massachusetts, United States d. 6 Feb 1696, Watertown, Middlesex, Massachusetts, United States (Age 52 years) |
| | 3. Barthalomew FLAGG, b. 23 Feb 1645, Watertown, Middlesex, Massachusetts, United States d. Yes, date unknown |
| | 4. Thomas FLAGG, b. 28 Apr 1646, Watertown, Middlesex, Massachusetts, United States d. Yes, date unknown |
| | 5. William FLAGG, b. 1648, Watertown, Middlesex, MA d. 21 Aug 1675, Lancaster, Worcester, Massachusetts (Age 27 years) |
| | 6. Michael FLAGG, b. 23 Mar 1650, Watertown, Middlesex, Massachusetts, United States d. 16 Oct 1711, Watertown, Middlesex, Massachusetts, United States (Age 61 years) |
| | 7. Eleazer FLAGG, b. 14 May 1653, Watertown, Middlesex, Mass d. 1 May 1722, Concord, Middlesex, Massachusetts, United States (Age 68 years) |
| | 8. Elizabeth FLEGG, b. 2 Mar 1655, Watertown, Middlesex, Massachusetts Bay, British America d. 9 Aug 1729, Watertown, Middlesex, Massachusetts Bay, British America (Age 74 years) |
| | 9. Mary FLAGG, b. 14 Jan 1657, Watertown, Middlesex, Massachusetts, United States d. SEPEMBER 7, 1720, Waltham, Middlesex, Massachusetts, United States (Age 62 years) |
| | 10. Mary FLAGG, b. 14 Jan 1658, Watertown, Middlesex, Massachusetts, United States d. 7 Sep 1720, Watertown, Middlesex, Massachusetts, United States (Age 62 years) |
| | 11. Rebecca FLAGG, b. 5 Sep 1660, Watertown, Middlesex, Massachusetts, United States d. 20 Jun 1721, Watertown, Middlesex, Massachusetts, United States (Age 60 years) |
| | 12. Benjamin FLAGG, b. 25 Jun 1662, Watertown, Middlesex, Massachusetts d. 3 May 1741, Worcester, Worcester, Massachusetts (Age 78 years) |
| | 13. Allen FLAGG, b. 16 May 1665 d. Yes, date unknown |
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