Jeffery went to school at Southampton, where his father was a successful merchant and alderman, before being sent to Oxford and the Inner Temple to complete his gentleman’s education. In the meantime his father acquired an estate at Catherston-Leweston, only two miles from Lyme Regis in Dorset. On 30 Dec. 1609 the corporation of Lyme Regis, in anticipation of a new session of Parliament, decided to replace their junior member, John Hassard, whom they found ‘languid and impotent’. Jeffery was chosen in his stead by the mayor, 11 of the capital burgesses (including Hassard himself) and 12 of the freemen.
Jeffery’s father died in 1611, but left a life interest in most of his property to his widow, who survived until 1630. Jeffery himself died ‘after long sickness’ on 22 Jan. 1622, and in his will dated seven days earlier desired to be buried in the parish church of Whitchurch Canonicorum, ‘under a fair blue tombstone with an inscription of my name, quality and date of death’.
