(i) Most Noble the Marquis of Westminster.
(ii) William Crockford of Arlington Street, Piccadilly, co. Middlesex, esq., Henry Austin of Brighton, co. Sussex esq., William Law of Cheapside, London, esq., Absalom Bennetts of Mertyn Hall, near Holywell, co. Flint, mine agent, and James Leigh of Broughton, near Manchester, gent.
Mines of lead ore in land on Halkin [Halkyn] Mountain, parishes of Halkin and Northop, containing 1,031 acres (map endorsed, showing Halkyn village).
Term: 21 years.
Royalty: 20s. per ton of lead ore.
Endorsed: 'Deep Level'.