"Ottokar I (Czech: Přemysl I. Otakar; c. 1155 – 1230) was Duke of Bohemia periodically beginning in 1192, then acquired the title King of Bohemia, first ...
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in 1198 from Philip of Swabia, later in 1203 from Otto IV of Brunswick and in 1212 from Frederick II. He was a member of the Přemyslid dynasty." - (en.wikipedia.org 28.10.2019)
