(i) Rt. Hon. Robert, Earl Grosvenor, Viscount Belgrave, Baron Grosvenor of Eaton, co. Chester.
(ii) Benjamin Monk of Chester and William Monk of Parkgate, parish of Neston, co. Chester, esqs.
Mines of lead ore, boose, smythom and calamine in ground containing eleven mears and thirty-two yards at Bryndriniog, parish of Witford [Whitford], co. Flint (map endorsed).
Term: 21 years.
Royalty: 40s. per ton of lead ore, boose and smythom, and 25s. per ton of calamine.