Biography
Isaac Harrington was born 6 May 1709 in Marlborough, Middlesex County, Massachusetts to Daniel Harrington (1683-1723) and Elizabeth Warren (1673-1774) and died 1 June 1782 Shrewsbury, Worcester County, Massachusetts, United States of unspecified causes. He married Miriam Eagar (1712-1801) 16 February 1729 in Marlborough, Middlesex County, Massachusetts.
Children
| Name | Birth | Death | Joined with |
| Lucy Harrington (1730-1782) | |||
| Zipporah Harrington (1731-) | |||
| Isaac Harrington (1738-) | |||
| Phoebe Harrington (1740-1811) | 25 May 1740 Grafton, Worcester County, Massachusetts | 6 March 1812 Marlborough, Windham County, Vermont | Samuel Whitney (1739-1811) |
| Fortunatus Harrington (1742-) | |||
| Sibbillah Harrington (1747-1827) | |||
| Zipporah Harrington (1748-1831) | |||
| Moses Harrington (1748-1749) | |||
| Antepas Harrington (1753-1803) | |||
Siblings
| Name | Birth | Death | Joined with |
| Daniel Harrington (1707-1795) | 5 October 1707 Marlborough, Middlesex County, Massachusetts | 31 August 1795 Marlborough, Middlesex County, Massachusetts | Mary Leonard (c1703-1793) |
| Isaac Harrington (1709-1782) | 6 May 1709 Marlborough, Middlesex County, Massachusetts | 1 June 1782 Shrewsbury, Worcester County, Massachusetts, United States | Miriam Eagar (1712-1801) |
| James Harrington (1711-) | |||
| Samuel Harrington (1713-1807) | |||