Gaius Julius Caesar Augustus Germanicus, more commonly known by his nickname Caligula, was the 3rd Roman Emperor who reigned from 16 March 37 until his assassination on 24 January 41. Caligula was a member of the Julio-Claudian dynasty whic...

Charles Martel also known as Charles the Hammer, was a Frankish military and political leader, who served as Mayor of the Palace under the Merovingian kings and ruled de facto during an interregnum (737–43) at the end of his life, using the...

Richard I was King of England from 6 July 1189 until his death. He also ruled as Duke of Normandy, Aquitaine and Gascony, Lord of Cyprus, Count of Poitiers, Anjou, Maine, and Nantes, and was overlord of Brittany at various times during the...

Ivan IV Vasilyevich, commonly known as Ivan the Terrible, was the Grand Prince of Moscow from 1533 to 1547 and Tsar of All the Russias from 1547 until his death. His long reign saw the conquest of the Khanates of Kazan, Astrakhan, and Siber...

Elizabeth I was Queen of England and Ireland from 17 November 1558 until her death on 24 March 1603. Sometimes called The Virgin Queen, Gloriana or Good Queen Bess, Elizabeth was the last monarch of the House of Tudor. Elizabeth was the...

Cardinal Richelieu was extremely intelligent and at the age of nine was sent to College de Navarre in Paris. In 1602, at age seventeen he began studying theology seriously. In 1606 he was appointed Bishop of Luçon, and in 1622 Pope Gregory...

John Locke was an English philosopher and physician regarded as one of the most influential of Enlightenment thinkers and known as the "Father of Classical Liberalism". Considered one of the first of the British empiricists, following the t...

Louis XIV, known as Louis the Great (Louis le Grand) or the Sun King (le Roi-Soleil), was a monarch of the House of Bourbon who ruled as King of France and Navarre from 1643 until his death. His reign of 72 years and 110 days is the longest...

Antoine-Laurent de Lavoisier was a French nobleman and chemist central to the 18th-century Chemical Revolution and a large influence on both the histories of chemistry and biology. He is widely considered to be the "Father of Modern Chemist...

In 1795 Jean Baptiste Joseph Delambre was admitted to the Bureau des Longitudes, becoming President in 1800. In 1801 he was appointed secretary to the Académie des Sciences making him the most powerful figure in science in France. In 17...

German poet, novelist, playwright, courtier, and natural philosopher, one of the greatest figures in Western literature. Throughout his life Goethe was interested in a variety of studies and pursuits. He made important discoveries in connec...

Louis XVI was King of France and Navarre from 1774 until 1791, and then King of the French in 1791-1792. Suspended and arrested during the insurrection of the 10th of August, he was tried by the National Convention, found guilty of treason...

John Dalton was an English chemist, meteorologist and physicist. He is best known for his pioneering work in the development of modern atomic theory, and his research into colour blindness. He developed the first useful atomic theory of...

Alexander von Humboldt was a German naturalist and explorer, and the younger brother of the Prussian minister, philosopher, and linguist, Wilhelm von Humboldt (1767-1835). Humboldt's quantitative work on botanical geography was foundational...

Georg Wilhelm Friedrich Hegel was a German philosopher, and a major figure in German Idealism. His historicist and idealist account of reality revolutionized European philosophy and was an important precursor to Continental philosophy and M...