Duke Louis IV of Bavaria (1282-1347) was a significant figure in the history of the Holy Roman Empire. He became Duke of Bavaria in 1294 and later was elected King of the Romans in 1328. His reign was marked by efforts to consolidate power and expand his territory, often through conflict with rival factions. Louis IV is also known for his involvement in the Great Schism of the Catholic Church, where he supported the election of rival popes. His reign contributed to the political landscape of medieval Europe, influencing the balance of power among the various German states and the Church.