Otakars

[1][2] The dynasty began with Otakar I, probably a son or son-in-law of Aribo (c. 850 – 909), margrave in Pannonia under King Arnulf.

His descendant Ottokar I (died 1064), Count in the Chiemgau,[2] became ruler of the Carantanian march in 1056.

In 1180 Margrave Ottokar IV gained the ducal title from Emperor Frederick I Barbarossa, thereby establishing the Duchy of Styria.

[1] The reign of the Otakars however ended with the extinction of the line upon Duke Ottokar's death in 1192.

In the Georgenberg Pact of 1186 he had agreed that his lands should pass to Leopold V, the Babenberg duke of Austria.