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| Date from | Date to | Event | Source |
|---|---|---|---|
| 2.1.1759 | Lieutenant ADM 6/19/54 | CSORN | |
| 11.2.1761 | Commander ADM 6/19/277 | CSORN | |
| 11.2.1761 | 4.3.1761 | Speedwell (8), Commander and Commanding Officer ADM 6/19/277 | ADM 6/19 |
| 4.3.1761 | 15.3.1762 | Lynx (10), Commander and Commanding Officer ADM 6/19/288 | BWAS-1714 |
| 19.2.1762 | 3.1762 | Elected a Member of Parliament for Wigtown Burghs | HPO |
| 7.4.1762 | Captain ADM 6/19/396 | CSORN | |
| 7.4.1762 | 21.2.1765 | Lively (20), Captain and Commanding Officer ADM 6/19/396 | BWAS-1714 |
| 16.3.1765 | 6.3.1766 | Montreal (32), Captain and Commanding Officer ADM 6/20/68 | BWAS-1714 |
| 22.4.1768 | 9.1784 | Elected a Member of Parliament for Wigtownshire | HPO |
| 27.12.1777 | 21.3.1781 | Berwick (74), Captain and Commanding Officer ADM 6/21/349 | ADM 6/21 |
| 27.7.1778 | 1st Battle of Ushant | ||
| 27.3.1781 | 1782 | Appointed Commander-in-Chief — North Sea ADM 6/22/266 | ADM 6/22 |
| 17.6.1782 | 30.12.1782 | Cambridge (80), Captain and Commanding Officer ADM 6/22/481 | BWAS-1714 |
| 20.10.1782 | Battle of Cape Spartel | ||
| 10.5.1790 | 21.9.1790 | Formidable (98), Captain and Commanding Officer ADM 6/24/26 | BWAS-1714 |
| 21.9.1790 | Rear-Admiral of the Blue ADM 6/24/68 | CSORN | |
| 1.2.1793 | Rear-Admiral of the Red ADM 6/24/201 | CSORN | |
| 12.4.1794 | Vice-Admiral of the Blue ADM 6/25/30 | CSORN | |
| 4.7.1794 | Vice-Admiral of the White ADM 6/25/55 | CSORN |