| Country | Sovereign or Heir | Born | Acceded | Consort | Born | Married | ||||
| Naples & Sicily | King Ferdinando IV (III) | 12 January | 1751 | 6 October | 1759 | Queen Maria Carolina (Archduchess Maria Carolina of Austria) | 13 August | 1752 | 7 April | 1768 |
| Great Britain | King George III | 4 June | 1738 | 25 October | 1760 | |||||
| Russia | Empress Catherine II | 2 May | 1729 | 9 July | 1762 | |||||
| Poland | King Stanislaw II Poniatowski | 17 January | 1732 | 25 November | 1764 | |||||
| Denmark & Norway | King Christian VII | 29 January | 1749 | 14 January | 1766 | |||||
| Sweden | King Gustav III | 24 January | 1746 | 12 February | 1771 | |||||
| Sardinia | King Vittorio Amadeo III | 26 June | 1726 | 20 February | 1773 | |||||
| France | King Louis XVI | 23 August | 1754 | 10 May | 1774 | |||||
| Portugal | Queen Maria I | 17 December | 1734 | 24 February | 1777 | |||||
| Holy Roman Empire | Emperor Joseph II | 13 March | 1741 | 18 August | 1765 | |||||
| Bohemia & Hungary | 29 November | 1780 | ||||||||
| Prussia | King Friedrich Wilhelm II | 25 September | 1744 | 17 August | 1786 | |||||
| Spain | King Carlos IV | 11 November | 1748 | 14 December | 1788 | |||||