TREVELYAN, Sir John, 4th Bt. (1735-1828), of Nettlecombe, Som. and Wallington, Northumb.
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Family and Education
b. 6 Feb. 1735, o.s. of Sir George Trevelyan, 3rd Bt., by Julia, da. of Sir Walter Calverley, 1st Bt.†, of Calverley, Yorks., sis. and h. of Sir Walter Calverley Blackett†, 2nd Bt. educ. New Coll. Oxf. 1753. m. 20 Apr. 1757, Louisa Marianne, da. and coh. of Peter Simond, Huguenot merchant, of London, 6s. 2da. suc. fa. as 4th Bt. 11 Sept. 1768; mat. uncle to Northumbrian estates 1777.
Sheriff, Som. 1777-8.
Trevelyan’s health was indifferent by 1790 and he made little mark in his last Parliament. As before, he supported Pitt, expecting professional advancement for members of his family in return. He was listed among opponents of repeal of the Test Act in Scotland in 1791. On 6 June 1793 he opposed Grey’s motion to adjourn the trial of Warren Hastings until the next session: just as he had opposed the impeachment itself, without ever having spoken to Hastin