Princess Antoinette of Monaco, Baroness of Massy (Antoinette Louise Alberte Suzanne Grimaldi; 28 December 1920 – 18 March 2011) was a member of the princely family of Monaco and the elder sister of Prince Rainier III and aunt of Albert II, Prince of Monaco. Her parents were Count Pierre de Polignac and Princess Charlotte, Duchess of Valentinois. <SEP> Princess Antoinette is still alive
Prince Antoine of Monaco, Baron of Massy (Antoine Louis Alberte Suz Grimaldi; 28 December 1920 – 18 March 2011) was a member of the princely family of Monaco and the elder brother of Prince Rainier III and brother of Albert II, Prince of Monaco. His parents were Count Pierre de Polignac and Princess Charlotte, Duchess of Valentinois. <SEP> Prince Antoine is still alive