MACKWORTH, Herbert (1687-1765), of Gnoll, Glam.

Published in The History of Parliament: the House of Commons 1715-1754, ed. R. Sedgwick, 1970
Available from Boydell and Brewer



16 Feb. 1739 - 20 Aug. 1765

Family and Education

b. 7 Sept. 1687, 1st s. of Sir Humphrey Mackworth, M.P., of Gnoll by Mary, da. and h. of Sir Herbert Evans of Gnoll; bro. of William Mackworth Praed. educ. Westminster; Magdalen Oxf. 1704; I. Temple 1708. m. 24 Apr. 1730,1 Juliana, da. of William Digby, M.P., 5th Baron Digby of Geashill [I], 1s. 6da. suc. fa. 1727.

Offices Held


Herbert Mackworth, of an old Derbyshire and Shropshire family, inherited through his mother large estates in Glamorgan and Monmouthshire. These included coalmines and several industrial enterprises together with the Gnoll copper works at Neath, which he himself further developed.2 He owed his election for Cardiff to the Windsor interest and his own control of Neath and Aberavon, two boroughs within the constituency. Returned unopposed as a Tory, he voted consistently against the Administration, except on the motion for Walpole’s removal, 13 Feb. 1741, when he was one of the Tories who voted against the motion. He died 20 Aug. 1765.

Ref Volumes: 1715-1754

Author: Peter D.G. Thomas


  • 1. Hist. Reg. 1730, chron. p. 33.
  • 2. D. Rhys Phillips, Hist. Vale of Neath, 227, 238, 268-80, 310.