18 Mar 1716/7 Joseph married Elizabeth Bartlett (21489) , daughter of Samuel Bartlett (10158) (ca 1666-bef 9 Dec 1713) & Hannah Pabodie (7978) (15 Oct 1662-29 Apr 1723), in Plymouth, MA. Born ca 1695/1700 in Duxbury, MA. Elizabeth died in Plymouth, MA on 19 Jan 1776.316

Joseph and Elizabeth were second cousins as their paternal grandfathers were brothers.

Children of Joseph and Elizabeth Bartlett, born at Plymouth:
    i. William Bartlett, b. 27 Apr 1718, d. 29 Sep 1718;
    ii. Silvanus Bartlett, b. 26 Nov 1719, bp. 20 Aug 1728 at Plymouth, d. 16 Nov 1811 at Plymouth, m. there 7 Jul 1743 Martha Waite (b. 6 Apr 1726 at Plymouth, d. there 30 Dec 1809;
    iii. Jerusha Bartlett, b. 21 Feb 1720/1, bp. 20 Aug 1728, d. 28 Jun 1785 at North Bridgewater, MA, m. 11 Mar 1744 Joseph Croswell (b. 10 Nov 1712 at Charlestown, MA, d. 27 May 1799 at Bridgewater);
    iv. Lydia Bartlett, b. 30 Dec 1722, d. 31 Aug 1796 at Plymouth, m. 5 Jul 1748 Jonathan Parker (b. Jan 1706 at Barnstable, MA, d. 24 Apr 1776 at Plympton, MA);
    v. Zaccheus Bartlett, b. 15 Jan 1724/5, d. 6 Mar 1780 at Plymouth, m. there 12 Apr 1753 Margaret Barnes (b. 14 Jun 1732 at Plymouth, bp. 22 May 1737, d. 30 Jun 1805 at Plymouth);
    vi. Betty Bartlett, b. 3 Jan 1726/7, bp. 20 Aug 1728, d. 18 Jun 1791 at Plymouth, m. there 6 May 1749 Benjamin Rider (b. 15 Apr 1724 at Plymouth, d. after 1790); and
    vii. Joseph Bartlett, b. 13 Feb 1728/9, d. bef 4 Sep 1756.316

On 16 May 1720 Lydia married Lazarus LeBaron (12868) , son of Francis LeBaron (ca 1668-8 Aug 1704) & Mary Wilder (4394) (5 Apr 1668-), in Plymouth, MA. Born on 26 Dec 1698 in Plymouth, MA.63 Lazarus died in Plymouth, MA, on 3 Sep 1773; he was 74.

On 24 Sep 1724 when Benjamin was 24, he first married Lydia Morton (13613) , daughter of Thomas Morton (4647) (ca 1667-bef 12 Sep 1748) & Martha Doty (10062) (9 Jul 1671-between 26 Aug 1741 and 12 Sep 1748), in Plymouth, MA. Born on 15 Nov 1702 in Plymouth, MA.63 Lydia died in Plymouth, MA in Nov 1739.63

Children of Benjamin and Lydia (Morton) Bartlett, born in Plymouth:
    i. James Bartlett, b. 12 Jul 1725, d. 12 Jan 1725/6;
    ii. Lydia Bartlett, b. 16 Nov 1726, d. young;
    iii. Solomon Bartlett, b. 2 Oct 1728, d. 4 May 1801 at Plymouth, m. there 26 Apr 1750 Joanna Holmes (d. 12 Dec 1773 at Plymouth);
    iv. Benjamin Bartlett, b. 10 Nov 1730, d. before 4 Jun 1755 at Plymouth, m. ca. 1751 Jean Ellis;
    v. Sarah Bartlett, b. 25 Apr 1733, m. at Plymouth 16 Nov 1750 Jabez Cobb (b. 6 Sep 1721 at Plymouth, son of Elisha &Lydia (Rider) Cobb);
    vi. Lydia Bartlett, b. 8 Jun 1735; and
    vii. Joseph Bartlett, b. 1 Aug 1739, d. 15 Jan 1808 at Unity, Waldo Co., ME, m. at Plymouth 4 Feb 1762 Lydia Cobb (b. 22 Jul 1741 at Plymouth, d. 1814 at Unity, dau. of Lemuel & Fear Cobb).

On 4 May 1741 when Benjamin was 41, he second married Abigail Pratt, daughter of Benajah Pratt (ca 1663-) & Mary Allen, in Plymouth, MA. Born on 6 Jul 1703 in Plymouth, MA. Abigail died in Plymouth, MA, on 20 Jan 1790; she was 86.

Abigail first married Thomas Morton, second Benjamin Bartlett.

Children of Benjamin and Abigail (Pratt) (Morton) Bartlett, born at Plymouth:
    i. William, b. 15 Feb 1741/2;
    ii. Priscilla, b. 3 Dec 1744; and
    iii. Elizabeth, b. 7 Oct 1746.