(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) Sir Thomas Mostyn of Mostyn, co. Flint, baronet.
Mines of lead ore in four meers and half in length and thirty yards in breadth bounding to the south on the mountain or waste ground in the township of Mertyn uwch Llan, parish of Whitford, at a place called Pen Fordd Whitford (map attached).
Term: 21 years.
Royalty: 25s. per ton of lead ore, boose and smythom.