On 4 Nov 1756 when James was 20, he married Mary Johnson (35472) , daughter of Samuel Johnson (23560) (21 Feb 1695-1764) & Judith Walker (16974) (16 Mar 1691-20 Mar 1742), in Wilmington, MA.124 Born on 22 Jan 1733 in Woburn, MA.124

Children of James and Mary (Johnson) Boutwell, born at Amherst, NH:
    i. Asa Boutwell, b. 11 Feb 1761, m. 25 May 1779 Bridget Pearsons;
    ii. Mary Boutwell, b. 5 Oct 1763, m. 16 Nov 1786 Noah Lawrence;
    iii. Abigail Boutwell, b. 22 Dec 1766, m. 14 Jun 1785 Jesse Woodbury;
    iv. Judith Boutwell, b. 9 Mar 1769, d. 5 Jun 1861, m. 26 Apr 1787 Jonathan Moulton Batchelder;
    v. James Boutwell, b. 29 Sep 1772, m. 16 Mar 1790 Deborah Haggett;
    vi. Nehemiah Boutwell, b. 20 Nov 1774, d. 3 Oct 1855, m. 28 Jun 1696 Elizabeth Jones; and
    vii. Alice Boutwell, b. 26 Jun 1776, d. 9 Oct 1859, m. 28 Jan 1796 Joseph Batchelder.