King of the Franks, German emperor (813–40), a son of Charlemagne. He administered the empire well but failed to organize his succession, thus jeopardizing the unity of the Frankish kingdom. He had four sons, the youngest by his second wife, and tried originally to settle the empire and its title on the oldest. This plan faltered as father and sons fought for control, causing Louis I to lose the throne briefly in 833.
Subjects: Medieval and Renaissance History (500 to 1500).