Carey was dubbed a knight of the Bath at the coronation of Charles I, and accorded the courtesy title Viscount Rochford at his father’s creation as earl of Dover in March 1628. Rochford, who was probably still technically under-age, did not stand at the general election to Charles’s third Parliament. However, following the tragic death of his first wife just a few weeks after their wedding, he was returned for Hertford, six miles from his home at Hunsdon, at a by-election in January 1629. His only recorded appointments were to attend the king with an address on Tunnage and Poundage on 2 Feb., and to a bill committee for confirming the Somers Island [Bermuda] Company charter (10 February).
Rochford was summoned, as Lord Hunsdon, to the House of Lords when the Long Parliament met, and under the guidance of Viscount Saye and Sele he took the parliamentary side in the Civil War.
