Louis IV, King (Duchy of Brittany (West Francia)) : All Data

Louis IV, also known as Louis d'Outremer, was the King of West Francia from 936 to 954. During his reign, he faced several significant conflicts. In 939, Louis fought against the rebellious Hugh the Great, Duke of the Franks, in the Battle of Reims. In 941, he engaged in the Battle of Trans-la-Forêt against the Vikings, successfully defending his kingdom. Another notable war occurred in 945, when Louis confronted the rebellious Normans in the Battle of Rouen. These conflicts align with the ruler's reign from 938 to 951, showcasing his efforts to maintain control over West Francia amidst internal and external threats.