Rainier III, Prince of Monaco of Monaco, the Palais Princier announced that Rainier's son, Hereditary Prince Albert, would take over the duties of his father as regent since Rainier was no longer able to exercise his royal functions. On 1 April 2005, the Palace announced that Rainier's doctors believe his chances of recovery were "slim". On 6 April, Prince Rainier died at the Cardiothoracic Center of Monaco at 6:35 AM local time at the age of 81. He was succeeded by his only son, who became Prince Albert II. He was buried on 15 April 2005, beside his wife, Princess Grace, at the Cathedral of
Charles III, Prince of Monaco served in the French Navy during the Franco-Prussian War, earning for his service the Cross of Knight of the Legion of Honor. The Order of Saint-Charles was instituted on 15 March 1858, during the reign of Prince Charles III. In his middle years his sight greatly weakened, and by the last decade of his life he had become almost totally blind. In fact, Dr. Thomas Henry Pickering wrote in 1882: "So far back as 1860, Prince Charles lost his eyesight..." He died at Château de Marchais on 10 September 1889. He was succeeded by his son Albert I of Monaco.