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
Louis II, Prince of Monaco Prince. When Louis died five years later, he was succeeded by his grandson, Prince Rainier III. Louis II, Prince of Monaco Louis II (12 July 1870 – 9 May 1949) was Prince of Monaco from 1922 to 1949. Born Louis Honoré Charles Antoine Grimaldi in Baden-Baden, Germany, he was the only child of Prince Albert I of Monaco (1848–1922), and Lady Mary Victoria Hamilton (11 December 1850 – 14 May 1922). His mother was a daughter of William Alexander Anthony Archibald Hamilton, 11th Duke of Hamilton, and his wife, Princess Marie Amélie Elizabeth Caroline of Baden. Within a year of