| Answer | Crossword Clue |
|---|---|
| ROI | Charles I, II, III ... or X |
| ACT | I, II or III |
| ROMANOV | Peter I, II or III |
| TSAR | Peter I, II or III |
| TSAR | Fyodor I, II or III |
| REY | Carlos I, II, III or IV |
| TSAR | Paul I, Peter II, or Ivan III |
| john | any of the three Epistles of John: I, II, or III John |
| johns | any of the three Epistles of John: I, II, or III John |
