Evelyn was the nephew of John Evelyn* of Godstone in Surrey, who was returned for Bletchingley in 1628. His father, a six clerk in Chancery, settled at West Dean on the border between Wiltshire and Hampshire, where the manor and advowson had been purchased by Evelyn’s grandfather. A substantial part of the family’s estates in Surrey were transferred to Evelyn on his marriage in April 1622, and he was knighted at Salisbury the following year.
In 1626 the attorney-general, (Sir) Robert Heath*, nominated Evelyn at Salisbury. Evelyn may have been recommended to Heath by his uncle, Sir George Rivers* who, like Heath, was closely connected with Richard Sackville, 3rd earl of Dorset. Evelyn was rejected by the corporation but was returned for Wilton, almost certainly as a nominee of William Herbert, 3rd earl of Pembroke, although the nature of his link with the earl is unknown.
In 1635 Evelyn was involved in the successful defence of his father and the other Six Clerks prosecuted for exactions in office.
