Pope Leo X: Did you mean...?

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...

Martin Luther (l. 1483-1546) was a German priest, monk, and theologian who became the central figure of the religious and cultural movement known as the Protestant Reformation. Even though earlier reformers had expressed Luther's views, his...

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 Great Palace of Constantinople was the magnificent residence of Byzantine emperors and their court officials which included a golden throne room with wondrous mechanical devices, reception halls, chapels, treasury, and gardens. In use...

The government of the Byzantine Empire was headed and dominated by the emperor, but there were many other important officials who assisted in operating the finances, judiciary, military, and bureaucracy of a huge territory. Without elections...

Exsurge Domine (“Arise, O Lord” in Latin) is a papal bull issued 15 June 1520 by Pope Leo X (served 1513-1521) condemning Martin Luther’s 95 Theses as heresy along with any other works by Luther or those who supported him. Luther burned the...

An illustration from a 12th century CE manuscript depicting the proclamation of Leo V the Armenian, emperor of the Byzantine Empire from 813 to 820 CE. (Madrid Skylitzes, National Library, Madrid)

Catherine of Aragon (1485-1536 CE) was a Spanish princess who famously became the Queen of England and the first wife of Henry VIII of England (r. 1509-1547 CE). When the marriage did not produce a male heir, Henry VIII became desperate to...

Constantine VII was Byzantine emperor from 945 until 959 CE. Sometimes known as Constantine Porphyrogennetos because of his birth in the purple chamber of the royal palace, he was served by various regents from 912 CE until reigning in his...

Thomas Becket (aka Thomas á Becket) was chancellor to Henry II of England (r. 1154-1189) and then archbishop of Canterbury (1162 to 1170). Thomas repeatedly clashed with his sovereign over the relationship between the Crown and Church, particularly...