Charles Powlett was returned on his family’s interest at Lymington in 1747 in succession to his uncle, Lord Nassau Powlett. Like his father he supported the Administration, voting with the Government in all recorded divisions. He was reelected for Lymington in 1747, although his uncle, the 3rd Duke of Bolton (Charles Powlett), whose efforts to gain complete control of the borough he had opposed, attempted at the last minute to have him replaced by somebody who would have been as agreeable to the Government, and more convenient to himself.
He shot himself on 5 July 1765.
