On 15 Aug 1721 when Mercy was 15, she married James Whitcomb (23274) , son of James Whitcomb (25803) (1668-26 Jun 1728) & Mary Parker (8776) (8 Sep 1667-30 Nov 1729), in Rochester, MA. Born on 21 Aug 1697 in Scituate, MA.52 James died in Warren, MA between 30 Aug 1763 and 16 Nov 1763.313

From The Whitcomb Family in America:313
    James Whitcomb owned land in Hardwick, Mass., and seems to have resided there awhile. About 1743 he removed from Rochester, Mass., to Western (later called Warren) where his death occurred sometime between August 30 and November 16, 1763. He was married four times, three of his wives being cousins. The fourth wife was still living February 28, 1771, when her dower was assigned.

Ca 1724 Elizabeth married Jonathan Delano (25677) , son of Jonathan Delano (14315) (Dec 1675-6 Jan 1765) & Hannah Doty (10082) (Dec 1675-12 Apr 1764). Born on 3 Nov 1701 in Duxbury, MA. Jonathan died bef 20 Apr 1745.

On 1 May 1731 Anne married Roland Hammond, son of Lieut. John Hammond (30 Nov 1663-19 Apr 1749) & Mary Arnold (ca 1672-3 Aug 1756). Born on 30 Oct 1706 in Rochester, MA. Roland died in Plympton, MA, on 16 Jun 1778; he was 71.

On 27 Jun 1734 when Thomas was 23, he married Rebecca Ewer (59432) , daughter of Shubael Ewer (49005) (6 Jan 1689/90-6 Aug 1715) & Rebecca Conant (4 Oct 1694-), in Barnstable, MA. Born on 27 Apr 1715 in Barnstable, MA. Rebecca died in Pomfret, Windsor County, Vermont, on 11 Oct 1767; she was 52.

On 21 Jun 1734 Kenelm married Elizabeth Clap (26645) , daughter of John Clap (25437) (Oct 1676-bef 1754) & Dorcas Earle (10635) (ca 1670-bef 1754), in Petersham, Worcester County, Massachusetts. Born 13 Feb 1713/4 in Rochester, MA. Elizabeth died in Petersham, Worcester County, Massachusetts on 10 May 1775.