| | | | |
| William Bowles R.N. | Explanation |
| |
| Date (from) | (Date to) | Personal |
| 1780 | | Born. |
| 9 August 1820 | | married the Hon. Frances Temple (died 1838) , sister of (the later Prime Minister) Viscount Palmerston |
| 12 April 1839 | | C.B. (Companion of the Bath). |
| 18?? | | M.P. for Launceston |
| 10 November 1862 | | K.C.B. (Knight Commander of the Bath). |
| 1869 | | Died. |
| |
| Date | Rank |
| 9 September 1796 | Entered Navy |
| 30 August 1803 | Lieutenant |
| 22 January 1806 | Commander |
| 13 October 1807 | Captain |
| 23 November 1841 | Rear-Admiral |
| 8 March 1852 | Vice-Admiral |
| 28 November 1857 | Admiral |
| 15 January 1869 | Admiral of the Fleet |
| |
| Date from | Date to | Service |
| 23 January 1822 | | Captain in William and Mary |
| 8 July 1822 | 23 November 1841 | Comptroller-General of the Coast Guard |
| 1843 | | On particular service (flag in Caledonia) |
| 22 May 1844 | 12 July 1846 | Commissioner of the Admiralty (Third Naval Lord) |
| 19 October 1844 | 20 November 1844 | Commander-in-chief, line-of-battle ships in 1844 experimental squadron (while remaining Commissioner of the Admiralty) |
| 1 March 1859 | 1 March 1860 | Commander-in-chief, Portsmouth. |