Louis I (Holy Roman Empire)

Louis I (Holy Roman Empire), called The Pious (778-840), Holy Roman emperor (814-840), king of France (814-840), king of Germany (814-840), and king of Aquitaine (781-840). He was the son and sole successor of Charlemagne. In 817 Louis made plans for an orderly succession among his sons: Lothair I, Louis II (Louis the German), and Pepin of Aquitaine. Later he wanted to include in the succession Charles II (Charles the Bald), his son by a second marriage. Dissatisfied, his older sons rebelled (830, 833) against him and fought among themselves for supremacy as well. Pepin died in 838, and in 843 the empire was divided among the three surviving brothers (see Verdun, Treaty of).