(i) Rt. Hon. Richard, Earl Grosvenor, Viscount Belgrave, Baron Grosvenor of Eaton, co. Chester.
(ii) Joseph Duke of Chester, gent., and William Hall of Chester, gent.
Mines of lead ore, boose, smythom and calamine in ten metres of ground in length and four in breadth on the mountain or waste ground (Blaen y Nant) called Llanarmon Mountain, parish of Llanarmon in Yale (map attached, showing Nant y Palma wash and washer's cabin).
Term: 21 years.
Royalty: 50s. per ton of lead ore, boose and smythom out of ground marked AA on map, 30s. per ton out of ground marked BB, and 20s. per ton of clamine.