As a youth, this man dressed himself in Basque clothing to reflect the composition of his army when he appeared before his father at the Council of Paderborn. He continued the religious policy of his 
As a youth, this man dressed himself in Basque clothing to reflect the composition of his army when he appeared before his father at the Council of Paderborn. He continued the religious policy of his father when he sent Archbishop Ebbo of Reims to convert the Danes to Christianity. This ruler faced a grave threat from the Slavs, who were led by Ljudevit Posavski of Pannonia and Omurtag of Bulgaria. This ruler ordered the imprisonment of Theodulf of OrlÃ©ans, whom he suspected of supporting a revolt led by this ruler's nephew. His closest advisers included Bernard of Septimania and the aforementioned Ebbo, both of whom would eventually betray him by allying with his sons. After the death of this ruler, his kingdom descended into a civil war that culminated in the Battle of Fontenoy. In the aftermath of that battle, this ruler's sons partitioned his kingdom in the Treaty of Verdun. For 10 points, name this Carolingian monarch, the son and successor to Charlemagne.
As a youth, this man dressed himself in Basque clothing to reflect the composition of his army when he appeared before his father at the Council of Paderborn.
Louis the Pious [or Louis I; or Louis the Fair; or Louis the Debonaire; prompt on Louis]