(i) Sir Robert Grosvenor of Eaton, co. Chester, baronet (brother and devisee of the real estate of Sir Richard Grosvenor late of Eaton, baronet, deceased).
(ii) Benjamin Perrin of Flint, merchant.
Mines of lead ore in the length of twenty meers and breadth of ninety yards on the mountain or waste ground in Llanverras [Llanferres], co. Denbigh, at a place called Cat Hole (map attached).
Term: 21 years.
Royalty: 25s. per ton of lead ore, boose and smythom.
Endorsed: note on production in the Exchequer in Grosvenor versus Vincent, 21 Sep 1761 [These mines were subsequently proved to be in Mold, co. Flint].