(i) Rt. Hon. Robert, Earl Grosvenor, Viscount Belgrave, Baron Grosvenor of Eaton, co. Chester.
(ii) Thomas Eyton of Pen-y-palmant, parish of Holywell, co. Flint, gent., and Edward Lewis of Rhos-y-cae, parish of Halkin [Halkyn], miner.
Mines of lead ore at Cornel-y-cae on Halkin Mountain, parish of Northop, co. Flint, bounded on the north by lands granted to John Stewart Hughes, and extending in a southwardly direction upon the range of the vein 440 yards, and being ninety yards wide (map endorsed).
Term: 21 years.
Royalty: 40s. per ton of lead ore.