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| Date from | Date to | Event | Source |
|---|---|---|---|
| 24.9.1773 | Appointed Lord Garlies | EWIKI | |
| 8.8.1789 | Lieutenant ADM 6/24/6 | CSORN | |
| 19.11.1790 | Commander ADM 6/24/87 | CSORN | |
| 19.11.1790 | 19.4.1791 | Scourge (16), Commander and Commanding Officer ADM 6/24/87 | ADM 6/24 |
| 19.4.1791 | 9.1791 | Vesuvius (8), Commander and Commanding Officer ADM 6/24/118 | BWAS-1714 |
| 18.4.1793 | 30.4.1793 | Vulcan (8), Commander and Commanding Officer ADM 6/24/231 | ADM 6/24 |
| 30.4.1793 | Captain ADM 6/24/233 | CSORN | |
| 30.4.1793 | Narcissus (20), Captain and Commanding Officer ADM 6/24/233 | ADM 6/24 | |
| 1.6.1793 | 8.10.1793 | Sheerness (44), Captain and Commanding Officer ADM 6/24/243 | ADM 6/24 |
| 8.10.1793 | 11.1794 | Winchelsea (32), Captain and Commanding Officer ADM 6/24/272 | BWAS-1714 |
| 10.1794 | 1795 | Lively (32), Captain and Commanding Officer | BWAS-1793 |
| 13.3.1795 | Lively vs Tourterelle | ||
| 4.1795 | 1796 | Lively (32), Captain and Commanding Officer | BWAS-1793 |
| 11.1799 | 12.3.1801 | Hussar (38), Captain and Commanding Officer | BWAS-1793 |
| 6.1804 | 4.1805 | Ajax (74), Captain and Commanding Officer | BWAS-1793 |
| 2.5.1805 | 10.2.1806 | Appointed Lord Commissioner of the Admiralty | W1812P |
| 13.11.1806 | Succeeded as 8th Earl of Galloway | EWIKI | |
| 31.7.1810 | Rear-Admiral of the Blue | CSORN | |
| 12.8.1812 | Rear-Admiral of the White | CSORN | |
| 1814 | Appointed Order of the Thistle | W1812P | |
| 4.6.1814 | Rear-Admiral of the Red | CSORN |