| | | | |
| George Francis Seymour R.N. | Explanation |
| Eldest son of Vice-Admiral Lord Hugh Seymour (1759-1801) |
| |
| Date (from) | (Date to) | Personal |
| 17 September 1787 | | Born |
| 12 April 1809 | | Supported Cochraine in the attack on the Basque Roads. |
| 1811 | | Married Georgiana Mary, daughter of Sir George Cranfield Berkeley. |
| 4 June 1815 | | C.B. (Companion of the Bath). |
| 1818 | 1841 | Sergeant-at-arms to the House of Lords. |
| August 1830 | November 1830 | Naval Aide-de-camp to William IV |
| 1831 | | K.C.H. (Knight Commander of the Royal Guelphic Order) |
| 9 December 1834 | | G.C.H. (Knight Grand Cross of the Royal Guelphic Order) |
| 7 April 1852 | | K.C.B. (Knight Commander of the Bath) |
| 18 May 1860 | | G.C.B. (Knight Grand Cross of the Bath) |
| 20 January 1870 | | Died |
| |
| Date | Rank |
| 10 October 1797 | Entered Navy |
| 12 October 1804 | Lieutenant |
| 23 January 1806 | Commander |
| 29 July 1806 | Captain |
| 23 November 1841 | Rear-Admiral |
| 27 March 1850 | Vice-Admiral |
| 14 May 1857 | Admiral |
| 20 November 1866 | Admiral of the Fleet |
| |
| Date from | Date to | Service |
| October 1797 | | Serving in Princess Augusta, yacht |
| March 1798 | September 1801 | Serving in Prince of Wales, serving with his father in the Channel and the West Indies |
| March 1798 | | Serving in Sanspareil, with his father in the Channel and the West Indies |
| 1802 | 1803 | Serving in Endymion |
| 1803 | | Serving in Victory, flagship of Lord Nelson |
| 1804 | | Lieutenant (acting) in Madras |
| 1804 | | Lieutenant in Donegal |
| 1806 | | Commander in Northumberland, West Indies |
| 9 February 1806 | | Commander in Kingfisher, West Indies |
| 29 June 1806 | | Captain in Aurora, Mediterranean |
| February 1808 | | Captain in Pallas, home waters |
| September 1809 | | Captain in Manilla |
| June 1812 | | Captain in Fortunée |
| January 1813 | September 1814 | Captain in Leonidas, West Indies |
| 1827 | | Captain in Briton, on particular service for a few months |
| 8 September 1841 | 22 May 1844 | Commissioner of the Admiralty (3rd Naval Lord) |
| 14 May 1844 | 25 August 1847 | Commander-in-chief, Pacific (flag in Collingwood) |
| 13 January 1851 | 23 November 1853 | Commander-in-chief, North America and West Indies (flag in Cumberland) |
| 1 January 1856 | 1 March 1859 | Commander-in-chief, Portsmouth (flag in Victory) |