TREVELYAN, Sir John, 4th Bt. (1735-1828), of Nettlecombe, Som. and Wallington, Northumb.

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.