Even though his father had determined a house law, whereby the four sons were obliged to rule jointly and equally, the eldest brother Rudolf IV assumed the reins of government after his father's death in 1358.
بالرغن ان والده حدد قانون العائلة, حيث إخوته الأربعة اضطرت للحكم لمشترك وعلى قدم المساواة، تولى الأخ الأكبر رودولف الرابع مقاليد الحكم بعد وفاة والده في 1358.