The House of Leuchtenberg is a noble family originally from Germany, established in the early 19th century. It gained prominence when Eugène de Beauharnais, the stepson of Napoleon Bonaparte, married Princess Augusta of Bavaria, becoming the first Duke of Leuchtenberg. The family played a significant role in European aristocracy, particularly in Russia and Germany. The house is known for its connections to various royal families and its influence in political and cultural spheres. Members of the House of Leuchtenberg have held important titles and positions, contributing to the history of the regions they were associated with, especially in Bavaria and Russia.