(i) Sir Watkin Williams Wynn of Wynnstay, co Denbigh, Bart.
(ii) James Vaughan of Hyde Park, co Middlesex, esq, William Spooner of Walton Lodge, co Stafford, esq, Robert William Hand of Rowley, near Stafford, esq, and Hon Henry Butler Johnstone of Piccadilly, co Middlesex.
All mines and minerals under certain lands in the parishes of Machynlleth and Penegoes, co Montgomery [Cwmbyr].
Term: 21 years
Rent: 1/16 part
Surrender (endorsed) 11 Feb 1879