Albert II, Prince of Monaco
Prince Albert II is one of the wealthiest royals in the world, with assets valued at more than $1 billion, which include land in Monaco and France. Although Prince Albert does not own the Prince's Palace of Monaco, he does own shares in the "Société des bains de mer de Monaco", which operates Monaco's casino and other entertainment properties in the principality.
Alice Heine
The Prince and Princess of Monaco separated judicially on May 30, 1902 (Monaco) and June 3, 1902 (France), but remained married. Upon the prince's death 20 years later, Alice became the Dowager Princess of Monaco. She did not remarry.