Ottokar II of Styria, born in the year one thousand eighty-two, was a prominent ruler known for his significant contributions to the region of Styria. As the son of Ottokar I, he played a crucial role in the political landscape of his time, particularly during the investiture dispute, where he aligned himself with the pope. This decision led to a conflict with his brother Adalbero, who supported the emperor, culminating in a tragic battle that resulted in Adalbero's death around one thousand eighty-six or one thousand eighty-seven.
Following the extinction of the Eppensteiner dynasty, Ottokar II inherited their vast possessions in the Mur and Mürz valleys, further solidifying his power and influence in the region. His reign was marked by strategic decisions that shaped the future of Styria and its governance.
In a notable act of devotion and community building, Ottokar II founded the Benedictine monastery in Garsten, Upper Austria, in the year one thousand one hundred eight. This establishment not only served as a religious center but also contributed to the cultural and social development of the area, reflecting Ottokar's commitment to both faith and progress.