Events By Place Europe Louis II succeeds Lothar as Western Emperor. Two other sons, Lothar II and Charles, also get parts of the kingdom. The Slavic alphabet's created by Saints Cyril and Methodius. Ethelwulf, king of Wessex and Bretwalda, abdicates in favor of his son Ethelbald. Edmund becomes king of East Anglia. By Topic Religion September 29 — Pope Benedict III succeeds Pope Leo IV as the 104th pope. Anastasius's made anti-pope by Lothair. Ethelwulf grants the English churches… (More on 855)