Wenceslaus I of Bohemia
As King Wenceslaus I of Bohemia wanted to take control over the duchies south of his realm, he arranged for the wedding of his eldest son and heir, Margrave Vladislaus III of Moravia, with Gertrude. The couple was even proclaimed Duke and Duchess of Austria, but Vladislaus died in the following year (1247). The next ruler of Austria was Gertrude's second husband, Margrave Herman VI of Baden, who died in 1250, leaving Austria and Styria princeless again.