This is a list of people who have served as Lord Lieutenant of the English county of Wiltshire. From 1750, all Lord Lieutenants have also been Custos Rotulorum of Wiltshire. Lord Lieutenants of Wiltshire William Herbert, 1st Earl of Pembroke 1551 – 17 March 1570 Henry Herbert, 2nd Earl of Pembroke 1570 – 15 January 1601 Edward Seymour, 1st Earl of Hertford 24 April 1601 – 6 April 1621 William Herbert, 3rd Earl of Pembroke 14 April 1621 – 10 April 1630 Philip Herbert, 4th Earl of Pembroke 12 August 1630 – 1642 Interregnum William Seymour, 1st Marquess of Hertford 10 July 1660 – 24 October 1660 Thomas Wriothesley, 4th Earl of Southampton 21 February 1661 – 16 May 1667 Edward Hyde, 1st Earl of Clarendon 18 June 1667 – 2 April 1668 Arthur Capell, 1st Earl of Essex 2 April 1668 – 22 August 1672 John Seymour, 4th Duke of Somerset 22 August 1672 – 29 April 1675 Philip Herbert, 7th Earl of Pembroke 20 May 1675 – 29 August 1683 Thomas Herbert, 8th Earl of Pembroke 11 October 1683 – 22 January 1733 jointly with William Paston, 2nd Earl of Yarmouth 22 March 1688 – 16 May 1689 Henry Herbert, 9th Earl of Pembroke 24 August 1733 – 9 January 1750 Hon. Robert Sawyer Herbert 20 March 1750 – 3 April 1756 Henry Herbert, 10th Earl of Pembroke 3 April 1756 – 22 March 1780 Thomas Brudenell-Bruce, 1st Earl of Ailesbury 22 March 1780 – 8 April 1782 Henry Herbert, 10th Earl of Pembroke 8 April 1782 – 26 January 1794 George Herbert, 11th Earl of Pembroke 21 March 1794 – 26 October 1827 Henry Petty-Fitzmaurice, 3rd Marquess of Lansdowne 23 November 1827 – 31 January 1863 George Brudenell-Bruce, 2nd Marquess of Ailesbury 25 March 1863 – 6 January 1878 Jacob Pleydell-Bouverie, 4th Earl of Radnor 18 March 1878 – 11 March 1889 John Thynne, 4th Marquess of Bath 1 April 1889 – 20 April 1896 Henry Petty-Fitzmaurice, 5th Marquess of Lansdowne 1 June 1896 – 3 March 1920 Walter Long, 1st Viscount Long 3 March 1920 – 26 September 1924 Jacob Pleydell-Bouverie, 6th Earl of Radnor 22 December 1924 – 26 June 1930 Sir Ernest Wills, 3rd Baronet 7 October 1930 – 4 May 1942 Evelyn Seymour, 17th Duke of Somerset 4 May 1942 – 26 April 1954 Sidney Herbert, 16th Earl of Pembroke 7 September 1954