Louis II "The Young" of Germany
Aged: 51.6 years
Louis II (Holy Roman Empire) (circa 825-75), Holy Roman emperor (855-75) and king of Italy (844-75), the eldest son of Holy Roman Emperor Lothair I. Louis was coemperor with his father from 850 to 855, when he became sole emperor, but his authority was in fact confined to his Italian kingdom. Although he was successful in some campaigns against the Saracen invaders of Italy, he was constricted by the jealousies of local Italian princes. He acquired much of Provence on the death of his brother Charles (circa 845-63), but he was a weak ruler, and his empire declined.