(i) Sir Watkin Williams Wynn of Wynnstay, co. Denbigh, Bart.
(ii) William Mostyn the elder of Plas Kynaston, co. Denbigh, esq., and William Mostyn the younger of Bryngwyn, co. Montgomery, esq., his son.
Coal mines under waste lands called Kefn Mawr in Ruabon, co. Denbigh.
Term: 21 years
Rent: 1/6 part of all coal raised