Upon the election of Rudolf of Habsburg as King of the Romans in 1273 , Theoderic initially sided with his rival King Ottokar II of Bohemia .
Upon the election of Rudolf of Habsburg as King of the Romans in 1273 , Theoderic initially later chose to remain neutral .
Upon the election of Rudolf of Habsburg as King of the Romans in 1273 , Theoderic initially sided with his rival King Ottokar II of Bohemia , but later chose to remain neutral .