The Duke of Béarn is a noble title historically associated with the region of Béarn in southwestern France. This title was established in the 16th century and has connections to the House of Foix, a prominent noble family. The title became significant during the reign of Henry IV of France, who was born in Béarn and later became King of France. The Duke of Béarn played a crucial role in the political landscape of France, especially during the Wars of Religion. The title has been held by various members of the Bourbon family, and it symbolizes the rich history and cultural heritage of the Béarn region. Today, the title is largely ceremonial and is part of France's noble history.