When the Lurn dynasty became extinct in 1135, the Counts of Ortenburg received large estates stretching from Möllbrücke down the Drava Valley to Rennstein near Villach. They also held possessions in the Gegend Valley around Afritz. In 1191 they founded a hospital ("Spittl") at the bridge across the Lieser river—site of the later town of Spittal an der Drau. In the twelfth and thirteenth centuries, Herman and Ulrich of Ortenburg served as Bishops of Gurk. Count Otto II joined the Crusade of 1197 of Emperor Henry VI. About 1330, Count Meinhard of Ortenburg acquired the estates of the extinct Counts of Sternberg between Lake Ossiach and Wörthersee. In the fourteenth century, the dynasty also owned the lands of Gottschee in Lower Carniola, where they founded the town of Gottschee (Kočevje) with German colonists from their Upper Carinthian lands.