Brave sons of the king, twin brothers Jaroslav and Jaromír love and help each other. It was they and another brother - Jindrich, who once saw the portrait of Princess of Diamond Mountains, fell in love and went on her quest.
Unfortunately the movie The Third Prince is not yet available on HBO Max.
| Directing | Antonín Moskalyk | Director |
| Directing | Vladimír Zelenka | First Assistant Director |
| Crew | Eva Kubesová | Script |
| Directing | Vít Horálek | Assistant Director |
| Writing | Stanislav Rudolf | Creative Producer |
| Writing | Karel Jaromír Erben | Book |
| Writing | Ota Hofman | Story |
| Crew | Ilona Šťastná | Stunt Double |
| Camera | Jiří Zavřel | Assistant Camera |
| Writing | Antonín Moskalyk | Screenplay |
| Costume & Make-Up | Petra Barochová | Costumer |
| Sound | Ivan Kurz | Original Music Composer |
| Costume & Make-Up | František Pilný | Makeup & Hair |
| Production | Václav Dobeš | Unit Production Manager |
| Costume & Make-Up | Zuzana Bursíková | Costumer |
| Production | Zdeňka Černá | Unit Production Manager |
| Crew | Marcela Pittermannová | Dramaturgy |
| Art | Yvetta Kornová | Set Decoration |
| Editing | Zdeněk Stehlík | Editor |
| Production | Václav Petr | Unit Production Manager |
| Sound | František Belfín | Conductor |
| Art | Boris Moravec | Assistant Production Design |
| Art | Eva Slívová | Set Decoration |
| Production | Jana Hauserová | Assistant Production Manager |
| Writing | Ota Hofman | Screenplay |
| Costume & Make-Up | Ladislav Bacílek | Makeup & Hair |
| Camera | Pavel Dosoudil | Camera Operator |
| Costume & Make-Up | Libuše Pražáková | Costume Design |
| Art | Milan Nejedlý | Production Design |
| Camera | Jiří Šámal | Director of Photography |
| Art | Jiří Matějka | Set Decoration |
| Costume & Make-Up | Zdena Prchlíková | Makeup & Hair |
| Sound | Karel Jaroš | Sound |
| Production | Václav Rouha | Production Manager |
| Crew | Ilona Přívětivá | Stunt Double |
| Crew | Cyril Neumann | Stunt Double |
| Camera | Miroslav Jirsa | Still Photographer |
