Definitions

Martin Bucer (l. 1491-1551) was a German reformer and theologian who had been a Dominican friar and priest until converted to the Protestant vision by Martin Luther (l. 1483-1546) c. 1518. Bucer is best known for his focus on unity among...

Saint Helena of Constantinople (248/250-328 CE) was the mother of Roman emperor Constantine I (r. 306-337 CE). She famously made a pilgrimage to Jerusalem where tradition claims found Christ's true cross and built the Basilica of the Holy...

Andreas Karlstadt (also given as Carlstadt, l. 1486-1541) was a reformer, theologian, and early supporter of Martin Luther (l. 1483-1546) in the movement that became known as the Protestant Reformation. Karlstadt was one of Luther's most...

Philolaus (l. c. 470 to c. 385 BCE) was a Pythagorean philosopher who claimed that fire was the first cause of existence and heat the underlying source of human life. He is best known for his pyrocentric model of the universe, which replaced...

Katharina Zell (also known as Katharina Schütz, Katharina Schütz-Zell, l. 1497-1562) was a reformer, theologian, and prolific writer in Strasbourg who helped establish the basic tenets of the Protestant Reformation without advancing sectarian...

The Revolt of the Parlements of 1787-1788, was the climax of a power struggle between the royal authority of King Louis XVI of France (r. 1774-1792) and the Parlement of Paris, the most powerful of France's thirteen parlements, or high judicial...

Archelaus of Athens (l. c. 5th century BCE) was a Pre-Socratic philosopher in ancient Greece who claimed the first cause of existence was the opposition of cold and heat which caused the separation of the universal essence to produce a plurality...

Camille Pissarro (1830-1903) was an impressionist painter based in France who focussed on landscapes but frequently changed his style and subjects. He was an instrumental figure in the new art movement of the 19th century, organising independent...

In the 2nd century CE, as Christianity was in the process of becoming an independent religion, a body of literature emerged that scholars classify as apocrypha and pseudepigrapha. Apocrypha (Greek: apokryptein, "to hide away") are those books...

Honoré-Gabriel Riqueti, comte de Mirabeau (l. 1749-1791) was a French orator and nobleman who rose to prominence as a leader during the early stages of the French Revolution (1789-1799). From the disgraced and scandalized son of a distinguished...