The Wynns of Wynnstay possessed the dominant interest in Denbighshire; but during the long minority in the family following the death of Sir Watkin Wynn in 1749, the representation was decided by an arrangement between the heads of the other two leading families, Richard Myddelton of Chirk Castle and Sir Lynch Salusbury Cotton of Llewenny: Myddelton represented the borough and Cotton the county.
Number of voters: about 2000
