(i) Most Noble the Marquis of Westminster.
(ii) Thomas Mather of Glyn Abbot, co. Flint, esq., Edward Humphrey Griffith of Plas Newydd, co. Denbigh, esq., John Prys Eyton of Kinsale, co. Flint, esq., William Bishop of Shelton Hall, co. Stafford, esq., John Francis Buckley of Walwen, parish of Holywell, co. Flint, agent, and Jane Sankey of Holywell, widow.
Mines of lead ore in land called Bryn yr henblas, parishes of Holywell, Halkin [Halkyn] and Ysceifiog, containing 166 acres 2 roods 2 perches (map endorsed, showing engine).
Term: 21 years.
Royalty: 20s. per ton of lead ore.
Endorsed: ' Pen yr Henblas'.