My father's cousin, Guy Beckwith has documentation on the Beckwith Genealogy. I will try and get this from him for you. James Beckwith's mother was Elizabeth Griswald.
Descendants of Elizabeth Griswold
Generation No. 1
1.ELIZABETH1 GRISWOLD was born Abt. 1651, and died 1737.She married (1) MATTEHEW II BECKWITH, son of MATTHEW BECKWITH and ELIZABETH.She married (2) JOHN ROGERS.She married (3) PETER PRATT.
Child of ELIZABETH GRISWOLD and MATTEHEW BECKWITH is: 2. i. JAMES2 BECKWITH, b. 1 June 1671, Conneticut; d. Abt. 1756.
Generation No. 2
2.JAMES2 BECKWITH (ELIZABETH1 GRISWOLD) was born 1 June 1671 in Conneticut, and died Abt. 1756.He married SARAH MARVIN.
Notes for JAMES BECKWITH: James Beckwith moved to Lyme Connecticut in 1692. James and Sarah had nine children. Here the Nova Scotia branches of the Beckwith begin. When the French were expelled from Horton and Cornwallis, 10 September 1755, the British gave the New England settlers free grants of land and thus resulted in a fleet of 22 vessels Saling from Connecticut carryinga large colony to Cornwallis. They arrived on 4 June 1760 and landed near a town plot. Samuel with his two sons and his brother, Ronald, sons of James Beckwith
Children of JAMES BECKWITH and SARAH MARVIN are: 3. i. SAMUEL3 BECKWITH, b. 14 May 1709. ii. ELIZABETH BECKWITH. iii. JOHN BECKWITH. iv. MARY BECKWITH. v. JAMES BECKWITH. vi. MATTHEW BECKWITH. vii. SARAH BECKWITH. viii. DANIEL BECKWITH. ix. REYNOLD BECKWITH.
Generation No. 3
3.SAMUEL3 BECKWITH (JAMES2, ELIZABETH1 GRISWOLD) was born 14 May 1709.He married MARY MARVIN.
Child of SAMUEL BECKWITH and MARY MARVIN is: 4. i. JOHN4 BECKWITH II, b. 16 March 1737/38, Norwich, Connecticut; d. 15 December 1816.
Generation No. 4
4.JOHN4 BECKWITH II (SAMUEL3, JAMES2, ELIZABETH1 GRISWOLD) was born 16 March 1737/38 in Norwich, Connecticut, and died 15 December 1816.He married CATHERINE CHIPMAN 11 August 1764 in Cornwallis, Nova Scotia Canada, daughter of HANDLEY CHIPMAN and JANE.
Children of JOHN BECKWITH and CATHERINE CHIPMAN are: i. JOHN CHIPMAN5 BECKWITH, b. 27 December 1765. ii. JANE BECKWITH, b. 5 January 1768. iii. HADLEY BECKWITH, b. 6 March 1770; d. 29 February 1860, Cornwallis, Nova Scotia Canada; m. CATHERINE NEWCOMB, 13 December 1792, Cornwallis, Nova Scotia Canada. iv. MARGARET BECKWITH, b. 16 April 1772. v. KATHERINE BECKWITH, b. 11 October 1774. vi. SARAH BECKWITH, b. 8 August 1776. vii. PRUDENCE BECKWITH, b. 9 March 1779. viii. ELIZABETH BECKWITH, b. 1782.