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Source (Wikipedia): Lord Lieutenant of Essex

This is a list of people who have served as Lord Lieutenant of Essex. Since 1688, all the Lord Lieutenants have also been Custos Rotulorum of Essex.John Petre, 1st Baron Petre John de Vere, 16th Earl of Oxford 1558–? Robert Dudley, 1st Earl of Leicester 3 July 1585 – 4 September 1588 William Cecil, 1st Baron Burghley 31 December 1588 – 4 August 1598 vacant Robert Radclyffe, 5th Earl of Sussex 26 August 1603 – 5 February 1629 jointly with Robert Rich, 2nd Earl of Warwick 8 September 1625 – 1642 jointly with Richard Weston, 1st Earl of Portland 5 February 1629 – 31 March 1635 and William Maynard, 1st Baron Maynard 6 August 1635 – 17 December 1640 and James Hay, 2nd Earl of Carlisle 8 January 1641 – 1642 Interregnum Aubrey de Vere, 20th Earl of Oxford 13 August 1660 – 1687 jointly with Christopher Monck, 2nd Duke of Albemarle 30 November 1675 – 1687 Thomas Petre, 6th Baron Petre 18 February 1688 – 1688 Aubrey de Vere, 20th Earl of Oxford 25 October 1688 – 12 March 1703 Francis North, 2nd Baron Guilford 23 March 1703 – 1705 Richard Savage, 4th Earl Rivers 16 April 1705 – 18 August 1712 Henry St John, 1st Viscount Bolingbroke 24 October 1712 – 1714 Henry Howard, 6th Earl of Suffolk 7 January 1715 – 19 September 1718 Charles Howard, 7th Earl of Suffolk 10 December 1718 – 9 February 1722 Henry O’Brien, 8th Earl of Thomond 2 April 1722 – 20 April 1741 Benjamin Mildmay, 1st Earl Fitzwalter 7 May 1741 – 29 February 1756 William Nassau de Zuylestein, 4th Earl of Rochford 3 April 1756 – 28 September 1781 John Waldegrave, 3rd Earl Waldegrave 7 November 1781 – 22 October 1784 John Griffin, 4th Baron Howard de Walden 17 November 1784 – 25 May 1797 Richard Griffin, 2nd Baron Braybrooke 27 January 1798 – 28 February 1825 Henry Maynard, 3rd Viscount Maynard 19 April 1825 – 19 May 1865 Thomas Crosbie William Trevor, 22nd Baron Dacre 5 October 1865 – 1869 Sir Thomas Burch Western, 1st Baronet 11 May 1869 – 30 May 1873 Chichester Parkinson-Fortescue, 1st Baron Carlingford 4 September 1873 – 1892 John Strutt, 3rd Baron Rayleigh 2 February 1892 – 1 August 1901 Francis Greville, 5th Earl of Warwick 1 August 1901 – 1919 Amelius Lockwood, 1st Baron Lambourne 11 February 1919 – 26 December 1928 Sir Richard Beale Colvin 31 January 1929 – 1936 Sir Francis Henry Douglas Charlton Whitmore, 1st Baronet 16 April 1936 – 1958 Sir John Ruggles-Brise, 2nd Baronet 6 September 1958 – 1978 Sir Andrew Lewis 1978–1992 Robin Neville, 10th Baron Braybrooke 3 August 1992 – October 2002 John Petre, 18th Baron Petre 16 December 2002 – 4 August 2017 Jennifer Tolhurst 5 August 2017 – present