Louis XVI was the last king of France (1774–92) in the line of Bourbon monarchs preceding the French Revolution of 1789. He was married to Marie Antoinette and was executed for treason by guillotine in 1793.

Louis XVII was recognized by royalists as the King of France from 1793, when he was 8, until his death in 1795.

Henry the Navigator, a 15th century Portuguese prince, helped usher in both the Age of Discovery and the Atlantic slave trade.

Sor Juana Inés de la Cruz was a 17th century nun, self-taught scholar and acclaimed writer of the Latin American colonial period and the Hispanic Baroque. She was also a staunch advocate for women's rights.

French philosopher Charles-Louis de Secondat, Baron de la Brède et de Montesquieu, was a highly influential political thinker during the Age of Enlightenment.

Henry IV granted religious freedom to Protestants by issuing the Edict of Nantes during his reign as king of France, from 1589 to 1610.

The internationally renowned Maria Callas captivated audiences with her iconic opera performances, showing off her vocal range in productions like 'Tosca' and 'Norma.'

Portia de Rossi, wife of Ellen DeGeneres, is known for playing the cold and calculating Nelle Porter on Ally McBeal and Lindsay Bluth-Funke on Arrested Development.

While in the service of Spain, the Portuguese explorer Ferdinand Magellan led the first European voyage of discovery to circumnavigate the globe.