On 17 Nov 1768 when Edmund Grindall was 29, he married Sarah Holmes, daughter of Christopher Holmes (4 Jun 1716-12 Apr 1792) & Sarah Andrews (13 Feb 1715/6-12 Aug 1782). Born on 5 Dec 1742 in East Haddam, CT. Sarah died in Hadlyme, CT, on 27 Apr 1821; she was 78.

Children of Edmund and Sarah (Holmes) Rawson, born at East Haddam:
    i. Charles Chauncy Rawson, b. 27 Jul 1769, d. 29 Jun 1788 in Bermuda;
    ii. John Wilson Rawson, twin, b. 27 Jul 1769, d. 1778;
    iii. Thomas Hooker Rawson, b. 24 Sep 1770, m. Melinda Bingham;
    iv. Edmund Geindal Rawson, b. 26 Jan 1772;
    v. Dorothy Blackleach Rawson, b. 17 Oct 1773, d. 31 Oct 1774 at East Haddam;
    vi. Ozias Holmes Rawson, b. 22 Apr 1775, physician, resided in New York;
    vii. Joseph Pern Rawson, b. 23 Dec 1776, d. ca. 1802;
    viii. Sarah Andrews Rawson, b. 31 Dec 1778, m. Oliver Usher;
    ix. Dorothy Nichols Rawson, b. 16 Jul 1780, resided at Macon, GA;
    x. infant child, d. 9 May 1785 at East Haddam;
    xi. Catherine Chauncy Rawson, b. 4 Feb 1788, d. 14 May 1826 at East Haddam, m. George Palmer (b. 22 May 1781, d. 1844); and
    xii. Charles Wilson Rawson, m. Mary Shackleford.