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
Jacques I, Prince of Monaco Jacques I, Prince of Monaco Jacques Goÿon de Matignon (Jacques François Léonor; 21 November 1689 – 23 April 1751) was Count of Thorigny, Prince of Monaco as Jacques I, and the fourth Duke of Valentinois from 1731 until 1733. Jacques came from an ancient Norman family. "Thorigny" is now called Torigni-sur-Vire, where the "Mairie" is the former family chateau. His uncle was Marshal Charles Auguste de Goÿon de Matignon. He was a son of Jacques Goÿon de Matignon, "jure uxoris" Comte de Thorigny, and Charlotte Goyon de Matignon, Comtesse de Thorigny "suo jure". When Antonio I of Monaco and his