(i) Rt. Hon. Robert, Earl Grosvenor, Viscount Belgrave, Baron Grosvenor of Eaton, co. Chester.
(ii) James Knight of Rhual, co. Flint, esq., Thomas Lewis of Glanrafon, co. Denbigh, William Jones of Pwllmelyn, co. Flint, lead merchant, John Phillips of Minera, co. Denbigh, gent., and John Turner of Gwern y gaseg, co. Denbigh, gent.
Mines of lead ore, calamine and black jack in lands near Maes y safn, parish of Llanferres, containing 596 acres 3 roods 26 perches (map endorsed).
Term: 21 years.
Royalty: 35s. per ton of lead ore, 20s. per ton of calamine, and 10s. per ton of black jack.