|Margraviate of Styria|
|1054 - 1180|
|Raised to Duchy||1180|
Styria originally formed part of the Carinthian March under the Duchy of Carinthia. In 1056 Count Ottokar V of the Traungau was given a separate march. As Ottokar's seat was previously at the town of Steyr, the new territory was named the "Steiermark" (anglicised to "Styria"). The most important act of Ottokar's reign was to end the war between Germany and Hungary. Margrave Adalbero sided with the Emperor in the Investiture Controversy, leading to a dispute with the church in which he was deposed and succeeded by his younger brother Ottokar II.
Ottokar II increased the size of the Magraviate after inheriting the lands of the House of Eppenstein in the Mur and Mürz valleys. Margrave Ottokar III further increased the march after inheriting the lands of the extinct Sponheim-Marburg family in Lower Styria, and the County of Pitten from the extinct counts of Formbach. Ottokar III also developed Styria markedly. He colonised the regions of the Traisen and Gölsen rivers, improved the roads across the Semering pass across the Alps, founded a hospital in Spital am Semmering in 1160, and brought Byzantine artists to Styria after the Second Crusade.