| Rt Hon Sir William Molesworth, bt | 5 January 1853 | 30 January 1855 |
| Rt Hon Sir Benjamin Hall, bt | 21 July 1855 | 21 February 1858 |
| Austen Henry Layard | 9 December 1868 | 26 October 1869 |
| Rt Hon William Patrick Adam | 11 August 1873 | 17 February 1874 |
| Gerard James Noel | 14 August 1876 | 21 April 1880 |
| Rt Hon William Patrick Adam | 3 May 1880 | 1880 |