This is a list of people who have served as Custos Rotulorum of Caernarvonshire.Sir Richard Bulkeley 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