Conrad II succeeded his father as Count of Paris, and recovered the Burgundian estates of his grand-uncle Otkarius. He left an only son Rudolph who assumed the royal crown at the abbey of St Maurice en Valais in 888, who confirmed his independence with two victories over Arnulf, and was then acknowledged emperor in a general diet of the empire. His son, Rudolph II succeeded to this new-formed state, which included the French or western part of Switzerland, Franche-Comté, Savoy, Dauphiné, Provence, and the country between the Rhine and the Alps, and was known as the kingdom of Burgundy. He twice attempted the conquest of Italy, and for a period of three years governed that kingdom.