A youthful squire, Turner was an undistinguished and increasingly absent Conservative country member who resigned, citing ill health, after barely a year in Parliament. Descended from the Frewens of Northiam, Sussex, in the mid-eighteenth century his grandfather Thomas Frewen (d. 1791) inherited the Turner estates in Leicestershire. He was succeeded by his eldest son John (1755-1829), who added Turner to the patronymic and moved the family to Cold Overton Hall, their Leicestershire seat.
At the 1835 general election Turner offered for South Leicestershire as a second Conservative. The incumbent Reformer withdrew, and he was returned unopposed.
Turner, who is not known to have spoken at Parliament or served on any committees, supported the Conservative leadership in major divisions such as the speakership, the address to the king and the Irish church, but his attendance deteriorated over the session.
In 1836 Turner returned to Brickwall, his Sussex seat and the following year he reverted to his family’s original surname after discovering that the additional patronymic, which had been a stipulation of the will of John Turner (d. 1753), was no longer necessary to claim the Leicestershire estates.
