Ruler of Monaco for nearly 56 years, who made a number of reforms that lessened the economy's dependence on gambling.
Doing World War II, he fought for the Free French Army, which earned him a French Cross of War.
He promoted Monaco as a tourist attraction and tax haven, and reduced the power of the royalty in making decisions.
In 1956, he married American actress Grace Kelly. They had three children: Princess Caroline in 1957, Albert II in 1958, and Princess Stephanie in 1965.
He remained married to actress Grace Kelly until her death in 1982.