(i) Rt. Hon. Richard, Earl Grosvenor, Baron Grosvenor of Eaton, co. Chester.
(ii) William Lloyd of Plas Power, parish of Wrexham, co. Denbigh, esq.
Mines of lead ore and calamine in a piece of land called the Bog in the township of Erreris, parish of Llanarman, containing four mears of ground in length and six in breadth (map attached).
Term: 21 years.
Royalty: 30s. per ton of lead ore, boose amd smythom, and 30s. per ton of calamine.