Austria was a duchy in the southeast of the HRE. In 1246, king Bela IV of Hungary fought Austria, killing the last Babenberger duke Friedrich II. His widow Margarete governed in his place. She and his niece Gertrud (wife of Vladislav of Moravia, elder brother of Otakar Przemysl) were the only living heirs. Other than OTL, in 1247 Vladislav didn't die, and when in 1253 Venceslaus / Vaclav I of Bohemia died, Vladislav inherited Bohemia, and also reigned Austria. He had to give Moravia to his ambitious brother, though. In 1254, Hungary "divided" Styria with king Vladislav. Hungary got the better part, only a few border cities became Austrian. One year later, Vladislav died. His little son Vaclav II inherited Bohemia and Austria, and Otakar Przemysl administered his lands until his adulthood.