The Clerk of the Ordnance was a subordinate of the Master-General of the Ordnance and a member of the Board of Ordnance from its constitution in 1597. He was responsible for the correspondence and for the financial bookkeeping of the Board. The office was abolished in 1857.
Clerks of the Ordnance (pre-Restoration) 28 February 1554: John Rogers 9 February 1560: William Painter 21 June 1595: Sir Stephen Riddlesden (d. 1607) 18 July 1603: John Riddlesden (joint) 12 June 1623: Francis Morrice 30 September 1635: Edward Sherburne (Senior) December 1641: Edward Sherburne (junior)
Clerks of the Ordnance (Parliamentary) bef. 1643: John White 1656: Lewis Audley bef. 1660: Thomas Nicholls
Clerks of the Ordnance (post-Restoration) 1660: Edward Sherburne bef. 7 August 1689: John Swaddell 26 March 1690: Sir Thomas Littleton, 3rd Baronet 15 May 1696: Christopher Musgrave 2 December 1714: Edward Ashe 19 March 1718: Thomas White 31 May 1733: Leonard Smelt 19 December 1740: William Rawlinson Earle 8 December 1772: Sir Charles Cocks, 1st Baronet 13 May 1782: Gibbs Crawfurd 20 May 1783: Humphrey Minchin 1 March 1784: Gibbs Crawfurd 11 February 1794: John Sargent 30 June 1802: William Wellesley-Pole 22 February 1806: John Calcraft 7 April 1807: William Wellesley-Pole 29 July 1807: Cropley Ashley-Cooper 14 June 1811: Robert Ward 29 April 1823: Sir Henry Hardinge 18 May 1827: Sir George Clerk, 6th Baronet 4 September 1828: Spencer Perceval 13 December 1830: Charles Tennyson 16 February 1832: Thomas Francis Kennedy 4 December 1832: William Leader Maberly 30 June 1834: Sir Andrew Leith Hay 30 December 1834: Sir Edward Owen 25 April 1835: Sir Andrew Leith Hay 28 March 1838: James Whitley Deans Dundas 28 June 1841: George Anson 13 September 1841: Henry George Boldero 14 August 1845: Lord Arthur Lennox 14 July 1846: George Anson 4 March 1852: Francis Plunkett Dunne 15 January 1853: William Monsell
References http://www.history.ac.uk/office/ordnance.html