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| Date from | Date to | Event | Source |
|---|---|---|---|
| 14.8.1733 | Entered the Royal Naval College | ODNB | |
| 14.8.1733 | 4.8.1735 | Royal Naval Academy
1733-1837 , Scholar, ADM 6/14/151British Shore Unknown 1806 Renamed "Royal Navy College" | ADM 6/14 |
| 4.10.1739 | Passed the Lieutenant's Examination ADM 107/3/346 | RNLPC | |
| 5.10.1739 | Lieutenant | CSORN | |
| 5.10.1739 | 18.1.1739/40 | Superb (60)
1736-1757 , Third Lt. & Lt. at Arms, ADM 6/15/227British 60 Gun 4th Rate Ship of the Line | ADM 6/15 |
| 19.9.1740 | 26.9.1740 | Rupert (60)
1740-1767 , Third Lt. & Lt. at Arms, ADM 6/15/333British 60 Gun 4th Rate Ship of the Line | ADM 6/15 |
| 3.6.1743 | Commander | ADM 6/17 | |
| 3.6.1743 | 19.8.1744 | Terrible (6)
1730-1749 , Commander, and Commanding Officer ADM 6/17/202British 6 Gun Unrated Bomb Vessel Issued by Thomas MathewsBritish , The Mediterranean Sea
Naval Sailor Service 1695-1749 Confirmed 19.2.1746/47 | ODNB |
| 19.8.1744 | Captain | CSORN | |
| 22.1.1745/46 | 3.1.1748/49 | Salisbury (50)
1746-1761 , Captain, and Commanding Officer ADM 6/17/47British 50 Gun 4th Rate Ship of the Line | BWAS-1714 |
| 30.7.1746 | 17.12.1761 | Elected a Member of Parliament for Fowey | HPO |
| 1.12.1748 | 31.5.1752 | Monmouth (70)
1742-1767 , Captain, and Commanding Officer ADM 6/17/416British 70 Gun 3rd Rate Ship of the Line | BWAS-1714 |
| 3.6.1752 | 22.3.1756 | Deptford (50)
1732-1767 , Captain, and Commanding Officer ADM 6/18/36British 50 Gun 4th Rate Ship of the Line | BWAS-1714 |
| 19.8.1752 | Appointed Commander-in-Chief — The Mediterranean Sea ADM 6/18/43 | ADM 6/18 | |
| 22.3.1756 | 31.7.1758 | Lancaster (66)
1749-1773 , Captain, and Commanding Officer ADM 6/18/245British 66 Gun 3rd Rate Ship of the Line | BWAS-1714 |
| 20.5.1756 | Battle of Minorca | ||
| 6.6.1758 | 27.7.1758 | The Siege of Louisbourg | |
| 21.2.1759 | 4.5.1761 | Hero (74)
1759-1810 , Captain, and Commanding Officer ADM 6/19/38British 74 Gun 3rd Rate Ship of the Line 1800 Renamed "Rochester" | BWAS-1714 |
| 20.11.1759 | Battle of Quiberon Bay | ||
| 29.3.1761 | 11.6.1761 | Expedition against Belle-Isle | |
| 10.5.1761 | Succeeded as 3rd Baron Edgcumbe | E-WIKI | |
| 18.6.1761 | 4.2.1795 | Appointed Lord Lieutenant of Cornwall | ODNB |
| 21.10.1762 | Rear-Admiral of the Blue | CSORN | |
| 1766 | 1771 | Appointed Commander-in-Chief — Plymouth | E-WIKI |
| 18.10.1770 | Rear-Admiral of the Red | ADM 6/20 | |
| 24.10.1770 | Vice-Admiral of the Blue | CSORN | |
| 7.11.1771 | Dublin (74)
1757-1784 , as Flag Officer, Vice-Admiral of the Blue, British 74 Gun 3rd Rate Ship of the Line | BWAS-1714 | |
| 25.6.1773 | Vice-Admiral of the White | CSORN | |
| 7.12.1775 | Vice-Admiral of the Red | ADM 6/21 | |
| 29.1.1778 | Admiral of the Blue | CSORN | |
| 1781 | Appointed 1st Viscount of Mount Edgcumbe and Valletort | E-WIKI | |
| 1782 | 4.2.1795 | Appointed Vice-Admiral of the Coast , Cornwall | E-WIKI |
| 8.4.1782 | Admiral of the White | CSORN | |
| 31.8.1789 | Appointed 1st Earl of Mount Edgcumbe | ODNB |