skos:altLabel | - Boris
- Died
- Tzar
- Tsar of Bulgaria
- Tsar Boris
- Boris of Bulgaria
- Prince Boris
- Prince Boris of Bulgaria
- Counter-coup
- Boris III
- Boris III of Bulgaria#Death
- Boris III.
- Boris Kronpriz von Bulgarien
- Boris of Tarnovo
- Bulgarian Tsar Boris III
- Crown Prince Boris
- Czar of Bulgaria
- H.M. Tzar Boris III
- King Boris
- King Boris III
- King Boris III of Bulgaria
- King Boris III of the Bulgarians
- Robert of Bulgaria
- The King of the Bulgarians
- The Prince of Tarnovo
- The Tsar of Bulgaria
- Tsar Boris III
- Tsar Boris III of Bulgaria
- Tsar Boris's
- Tzar Boris III
- Тsar Boris III
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