| Clue | Source | Date |
|---|---|---|
| Monarch's male heir (5,6) | ||
| Akishino's royal title (5,6) | ||
| Frederik of Denmark's title (5,6) | ||
| Future king | USA Today | 02 Oct 2021 |
| Royal heir apparent | USA Today | 02 Sep 2019 |
| Certain heir to the throne | Newsday | 27 Feb 2019 |
| Royal heir apparent | ||
| Future king | ||
| Heir apparent | ||
| King-to-be | ||
| Future king |