This is a list of people who have served as Custos Rotulorum of Caernarvonshire. * c. 1544 * John "Wynn" ap Maredudd bef. 1550–1559 * Maurice Wynn bef. 1562 – aft. 1577 * Robert Dudley, 1st Earl of Leicester bef. 1579–1588 * William Maurice bef. 1594–1596 * Sir Thomas Mostyn 1596–1618 * Sir John Wynn, 1st Baronet 1618–1627 * Sir Richard Wynn, 2nd Baronet 1627–1646 * Interregnum * Sir Richard Wynn, 4th Baronet 1660–1674 * Richard Bulkeley, 3rd Viscount Bulkeley 1679–1689 * Lord Edward Russell 1689–1714 * Peregrine Bertie, 2nd Duke of Ancaster and Kesteven 1714–1739 * Sir William Yonge, 4th Baronet 1739–1755 * Sir John Wynn, 2nd Baronet 1756–1773 * Thomas Wynn, 1st Baron Newborough 1773–1781