ORIGIN: Unknown.
CHURCH MEMBERSHIP: Admitted to Dorchester church before 14 May 1634 (third in a grouping of ten Dorchester men in freeman's list).
FREEMAN: 14 May 1634 [MBCR 1:369]. New Haven, 25 October 1639 [NHCR 1:9, 17, 20]. New Haven oath of fidelity 1 July 1644 [NHCR 1:137].
DEATH: New Haven 23 August 1661 (as "Sergeant Tho[mas] Jefferies" [NHVR 1:17].