On 9 Jul 1748 when Joseph was 25, he married Mary Pierce, daughter of John Pierce (-bef 3 Jun 1769), in Rehoboth, MA. Born 6 Jan 1726/7 in Rehoboth, MA. Mary died in Putney, Windham County, Vermont on 18 May 1802.

Children of Joseph and Mary (Pierce) Allyn, born at Rehoboth:
    i. Jacob Allyn, b. 27 Aug 1749, d. soon;
    ii. John Allyn, b. 10 Jun 1752;
    iii. Joseph Allyn, b. 23 Aug 1756, d. 16 Sep 1797 at West Putney, VT, Rev., m. at Rehoboth 27 Feb 1778 Mary Thurston (b. 7 Feb 1760 at Rehoboth, d. ca. 1830 at Penfield, NY);
    iv. Lydia Allyn, b. 23 Apr 1758;
    v. Thomas Allyn, b. 6 Sep 1759, d. soon;
    vi. Ichabod Allyn, b. 19 Mar 1762, d. soon;
    vii. Lewis Allyn, b. 8 Apr 1764; and
    viii. Thomas Allyn, b. 26 Feb 1767.

On 19 Apr 1753 when Thomas was 28, he first married Sybil Blanding, daughter of William Blanding (2 May 1676-19 Jun 1724/5) & Mehitable, in Rehoboth, MA. Born on 10 Sep 1721 in Rehoboth, MA.

Children of Thomas and Sybil (Blanding) Allyn, born at Rehoboth:
    i. Deborah Allyn, b. 3 Feb 1755, d. 31 May 1802 at Rehoboth;
    ii. Jacob Allyn, b. 3 Sep 1756, d. 4 Mar 1814 at Warren Center, PA, m. at Rehobeth 25 May 1780 Joanna Carpenter;
    iii. William Allyn, b. 19 Mar 1758, d. 9 Dec 1798 at Rehoboth, m. there 29 Jan 1779 Elizabeth Yonge (d. 11 Nov 1813 at Rehoboth);
    iv. Sybil Allyn, b. 4 Mar 1760, d. before 1 Nov 1803; and
    v. Thomas Allyn, b. 20 Nov 1762.

On 7 Apr 1791 when Thomas was 66, he second married Rebecca Peck (56512) , daughter of Albiezer Peck (42725) (21 Apr 1714-20 Sep 1800) & Naomi Allen (ca 1718-2 Jul 1801), in Rehoboth, MA. Born on 13 Sep 1745 in Rehoboth, MA. Rebecca died in Seekonk, MA, on 12 Aug 1822; she was 76.

On 4 Sep 1756 when Abner was 25, he first married Sarah Hedden in Rehoboth, MA. Born ca May 1737. Sarah died in Rehoboth, MA on 19 Dec 1780.

On 7 Apr 1792 when Abner was 60, he second married Mehitable Fobes in Rehoboth, MA. Mehitable died in Rehoboth, MA on 8 Aug 1807.

Samuel married Sarah.

Children of Samuel and Sarah Allyn, born at Rehoboth:
    i. Hannah Allyn, b. 27 Dec 1761;
    ii. Olive Allyn, b. 26 Feb 1762, d. 20 Feb 1776;
    iii. Amaziah Allyn, b. 7 Aug 1763, d. 17 Dec 1845, m. Freelove Bucklin;
    iv. Asa Allyn, b. 23 Aug 1765;
    v. Samuel Allyn, b. 6 Mar 1767, d. 20 May 1841 at Seekonk, MA;
    vi. Benajah Allyn, b. 15 Aug 1768, d. 9 Jul 1796;
    vii. Olive Allyn, b. 10 May 1770;
    viii. Sarah Allyn, b. 27 Oct 1772;
    ix. Molly Allyn, b. 19 Mar 1775; and
    x. Thomas Allyn, b. 15 Feb 1778, d. 25 Jun 1837 at Seekonk.

On 27 Jul 1754 when Hannah was 19, she married Jedediah Carpenter.

Perhaps his name was Juddiah Carpenger.

On 17 Mar 1757 when Sarah was 20, she married Ezra Ide, son of Daniel Ide (4 Jun 1701-17 Oct 1753) & Hannah Carpenter (31 May 1702-13 Nov 1753), in Rehoboth, MA. Born 6 Feb 1736/7 in Rehoboth, MA. Ezra died in Rehoboth, MA on 7 Sep 1785.

On 26 Sep 1767 when James was 28, he married Elizabeth Allen in Rehoboth, MA.

On 26 Mar 1761 when Betty was 19, she married Comfort Pierce, son of John Pierce (-bef 3 Jun 1769), in Rehoboth, MA. Born on 26 Mar 1741 in Rehoboth, MA. Comfort died in Rehoboth, MA, on 7 Dec 1821; he was 80.