William Taylor was born 22 February 1712 in Yarmouth, Barnstable County, Massachusetts to Seth Taylor (1677-1721) and Susannah Sturgis (1683-1738) . He married Desire Thacher (1722-1816) 2 June 1743 in Massachusetts.
Children
| Name | Birth | Death | Joined with |
| Phebe Taylor (1744-1775) | |||
| Lucy Taylor (1746-) | |||
| William Taylor (1748-) | |||
| Desire Taylor (1756-1786) | |||
| John Taylor (1758-) | |||
| Thacher Taylor (1760-) | |||
| Abigail Taylor (1763-1820) | 1763 Barnstable, Barnstable County, Massachusetts, United States | 19 September 1820 Barnstable, Barnstable County, Massachusetts, United States | Edward Gorham (1762-1822) |
Siblings
| Name | Birth | Death | Joined with |
| Barabas Taylor (1701-1750) | |||
| Abigail Taylor (1703-) | |||
| Seth Taylor (1705-) | |||
| James Taylor (1707-1779) | |||
| Eleanor Taylor (1709-1711) | |||
| Ebenezer Tayloer (1709-1785) | |||
| William Taylor (1712-) | 22 February 1712 Yarmouth, Barnstable County, Massachusetts | Massachusetts | Desire Thacher (1722-1816) |
| Thankful Taylor (1715-1790) | |||
| John Taylor (1715-) | |||
| Thomas Taylor (1718-) | |||
| Enock Taylor (1720-) | |||
| Nathaniel Taylor (1723-1724) | |||