In many ways Rudolf I was a classic German minor ruler. He had accumulated or inherited territories dotted around Alsace, Swabia and what is now northern Switzerland (including the ‘Habichtsburg’, the ‘hawk’s fortress’ that probably gave the family their name – the Swiss kicked them out of it in 1415). He proved to be a successful Emperor and took an army into Austria to expel King Ottakar. After several twists and turns Rudolf allied with the Hungarians to defeat the Bohemians and killed Ottakar at the Battle on the Marchfeld in 1278.