Rainier III, Prince of Monaco Rainier III, Prince of Monaco Rainier III (Rainier Louis Henri Maxence Bertrand Grimaldi; 31 May 1923 – 6 April 2005) ruled the Principality of Monaco for almost 56 years, making him one of the longest ruling monarchs in European history. Though internationally known for his marriage to American actress Grace Kelly, he was also responsible for reforms to Monaco's constitution and for expanding the principality's economy beyond its traditional casino gambling base. Gambling accounts for only approximately three percent of the nation's annual revenue today; when Rainier ascended the throne in 1949, it accounted for more than 95 percent. Rainier
Politics of Monaco Politics of Monaco The politics of Monaco take place within the framework of a constitutional monarchy, with the Prince of Monaco as head of state, with some powers devolved to several advisory and legislative bodies. Historically, the princes of the ruling House of Grimaldi were autocrats of an absolute monarchy until the first Constitution of Monaco was adopted in 1911. A second constitution was granted by Prince Rainier III on December 17, 1962, outlining legislative, judicial, and executive branches of government, which consist of several administrative offices and a number of councils. The Prince as head of state retains most