| Clue | Source | Date |
|---|---|---|
| Certain European ruler | Universal | 20 May 2025 |
| Son of a Russian tsar (5,4) | ||
| European rank one degree below that of sovereign (5,4) | ||
| *Luxembourg’s monarch Henri, e.g | Wall Street Journal | 13 Jun 2022 |
| Title of Luxembourg's leader | ||
| Tuscany title | ||
| Noble. |