Ottokar_IV,_Duke_of_Styria
Ottokar IV, Duke of Styria
Margrave (later Duke) of Styria from 1164 to 1192
Ottokar IV (19 August 1163 – 8 May 1192), a member of the Otakar dynasty, was Margrave of Styria from 1164 and Duke from 1180, when Styria, previously a margraviate subordinated to the stem duchy of Bavaria, was raised to the status of an independent duchy.