Louis II, Prince of Monaco
On 26 June 1922, Prince Albert I died in Paris. Louis Grimaldi ascended to the throne as Louis II, Prince of Monaco. While his reign never achieved the grandeur of his father, Louis II left an indelible imprint on the tiny principality. In 1924 the Monaco Football Club was formed and in 1929, the first Grand Prix of Monaco automobile race was held, won by Charles Grover (aka "Williams") driving a Bugatti painted in what would become the famous British racing green color. He collected artefacts belonging to Napoleon I which are now assembled and displayed in the Napoleon Museum attached to the Royal Palace in Monte Carlo.
Louis II, Prince of Monaco
A political crisis loomed for the Prince because without any other heir, the throne of Monaco would pass to his first cousin Wilhelm, the Duke of Urach, a German nobleman who was a son of Prince Albert's aunt, Princess Florestine of Monaco. To ensure this did not happen, in 1911 a law was passed recognizing his illegitimate daughter, Charlotte, as Louis's acknowledged heir, and making her part of the princely family. This law was later held to be invalid under the 1882 statutes. Thus another law was passed in 1918 modifying the statutes to allow the adoption of an heir, with succession rights. Charlotte was formally adopted by Louis in 1919, and became Charlotte Louise Juliette Grimaldi, Princess of Monaco, and Duchess of Valentinois.