Pope Leo X: Did you mean...?

Basil I was emperor of the Byzantine Empire from 867 to 886 CE and he founded the "Macedonian" dynasty which lasted for over 200 years. Basil was an Armenian from a humble background who had risen to become the second most powerful man in...

The Byzantine Emperor ruled as an absolute monarch in an institution which lasted from the 4th to 15th century CE. Aided by ministers, high-ranking nobility, and key church figures, the emperor (and sometimes empress) was commander-in-chief...

Charlemagne (Charles the Great, also known as Charles I, l. 742-814) was King of the Franks (r. 768-814), King of the Franks and Lombards (r. 774-814), and Holy Roman Emperor (r. 800-814). He is among the best-known and most influential figures...

Michael II the Amorion, also known as Michael “the Stammerer”, was emperor of the Byzantine Empire between 820 and 829 CE. He founded the short-lived Amorion dynasty, named after his hometown in Phrygia, which would last until 867 CE. Surviving...

Johann Tetzel (l.c. 1465-1519) was a Dominican Friar who became famous as one of the most effective indulgence salesmen and who inadvertently inspired the Protestant Reformation when Martin Luther (l. 1483-1546) wrote his 95 Theses protesting...

Built in the seventh century BCE, the ancient city of Byzantium proved to be a valuable city for both the Greeks and Romans. Because it lay on the European side of the Strait of Bosporus, the Emperor Constantine understood its strategic importance...

The Byzantine Empire existed from 330 to 1453. It is often called the Eastern Roman Empire or simply Byzantium. The Byzantine capital was founded at Constantinople by Constantine I (r. 306-337). The Byzantine Empire varied in size over the...

Pope Innocent III (not to be confused with anti-pope Innocent III), r. 1198-1216 CE, is depicted in this print from Chronologia Summorum Romanorum Pontificum, published in 1675 CE. The text at the bottom reads "Innocent III, ". Measures 120...

The Protestant Reformation (1517-1648) refers to the widespread religious, cultural, and social upheaval of 16th-century Europe that broke the hold of the medieval Church, allowing for the development of personal interpretations of the Christian...

The Council of Clermont in central France was held in November 1095 and witnessed Pope Urban II's (r. 1088-1099) historic call for the First Crusade (1095-1102) to capture Jerusalem for Christendom from its Muslim occupiers. The Pope's speech...