Who dated Arnulf of Carinthia?

Arnulf of Carinthia (c. 850 – 8 December 899) was the duke of Carinthia who overthrew his uncle Emperor Charles the Fat to become the Carolingian king of East Francia from 887, the disputed king of Italy from 894, and the disputed emperor from 22 February 896 until his rival Lambert's death in late 898. He died on 8 December 899 at Ratisbon just a year later, in Bavaria. He was the last member of the Carolingian dynasty to rule in Italy as both King and Emperor, despite his rule being contested by his rivals Lambert of Italy and Berengar I of Italy.