| Answer | Crossword Clue |
|---|---|
| SON | Grand duke, to a czar |
| SON | Grand duke vis-a-vis a czar |
| TSAR | Father of a grand duke |
| IVAN | A grand duke of Muscovy |
| CZAR | Father of a grand duke |
| HENRI | Luxembourg's Grand Duke |
| IVAN | Grand Duke of Muscovy. |
| IVAN | Grand duke of Muscovy. |
| IVAN | Grand Duke of Muscovy |
| HENRI | Grand Duke of Luxembourg |
| IVANI | Grand Duke of the 1300's. |
| IVANIII | Russian Grand Duke, 1462-1505 |
| IVANI | 14th C. Grand Duke of Moscow. |
| IVANI | Grand Duke of Moscow, 14th cen. |
| IVANI | Grand duke of Moscow: 1328-41 |
| ADOLPHE | Luxembourg grand duke in whose name an annual art prize is awarded |
