Monarchy of Monaco Monarchy of Monaco The Sovereign Prince () or Princess of Monaco () is the reigning monarch and head of state of the Principality of Monaco. All reigning princes and princesses have officially taken the name of the House of Grimaldi, although some have belonged to other families (Goyon de Matignon or Polignac) in the male line. The present reigning prince is Albert II. Monaco, along with Liechtenstein and Vatican City, is one of only three states in Europe where the monarch still plays an active role in day-to-day politics. The Prince or Princess of Monaco exercises his or her authority
Prince's Palace of Monaco Juliette Louvet, by whom he had a daughter, Charlotte Louise Juliette, born in Algeria in 1898. As Prince of Monaco, Louis II spent much time elsewhere, preferring to live on the family estate of Le Marchais close to Paris. In 1911 Prince Louis had a law passed legitimising his daughter so that she could inherit the throne, in order to prevent its passing to a distant German branch of the family. The law was challenged and developed into what became known as Monaco succession crisis. Finally in 1919 the prince formally adopted his illegitimate daughter Charlotte, who became known as