Louis — French form of Ludovicus, the Latinized form of Ludwig. This was the name of 18 kings of France, starting with Louis I the son of Charlemagne. Others include Louis IX (Saint Louis) who led two crusades and Louis XIV (called the Sun King) who was the ruler of France during the height of its power, the builder of the Palace of Versailles, and the longest reigning monarch in the history of Europe.
Saintly namesake: Louis IX of France was a revered king known for his justice and charity. He is the most famous Saint Louis and is remembered as a model of Christian kingship. (August 25 · 13th century)
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