Otto I of Brno
| Otto I | |
|---|---|
| Prince of Olomouc | |
| Born | 1045 |
| Died | 9 June 1087 |
| Noble family | Přemyslid dynasty |
| Issue | |
| Father | Bretislav I |
| Mother | Judith of Schweinfurt |
Otto I (1045 – 9 June 1087), known as Otto the Fair (Czech: Ota Sličný), a member of the Přemyslid dynasty, was Prince of Olomouc in Moravia from 1061 until his death.
He was the youngest son of the Bohemian duke Bretislav I and his wife Judith of Schweinfurt. After his father's death in 1055, his older brother was crowned as Duke Spytihněv II of Bohemia. Otto ruled as a Přemyslid prince in Brno, but after struggles with his brother Vratislaus of Olomouc, he took refugee in Prague. When in 1061 Spytihněv died and his brother Vratislaus was crowned duke, Otto took over the government of the Olomouc principality. Like his brothers Conrad and Bishop Jaromír of Prague, he strongly resisted against Duke Vratislaus' centralised rule.
Otto married Euphemia, a daughter of King Béla I of Hungary, before 1073. His sons were:
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