Pope Leo X: Did you mean...?

Stained glass window in York Minster depicting Pope Celestine III (1191-1198 CE)

Saint Thomas Aquinas (l. 1225-1274, also known as the "Ox of Sicily" and the "Angelic Doctor") was a Dominican friar, mystic, theologian, and philosopher, all at once. Although he lived a relatively short life, dying at age 49, Thomas occupied...

The English Reformation began with Henry VIII of England (r. 1509-1547 CE) and continued in stages over the rest of the 16th century CE. The process witnessed the break away from the Catholic Church headed by the Pope in Rome. The Protestant...

John Wycliffe (l. 1330-1384, also John Wyclif) was an English theologian, priest, and scholar, recognized as a forerunner to the Protestant Reformation in Europe. Wycliffe condemned the practices of the medieval Church, citing many of the...

Statue of St. Gregory the Great in the Oratory of St. Barbara on the Caelian Hill, Rome.

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...

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...

Religious practice in medieval Europe (c. 476-1500) was dominated and informed by the Catholic Church. The majority of the population was Christian, and "Christian" at this time meant "Catholic" as there was initially no other form of that...

The Council of Trent (1545-1563) was a meeting of Catholic clerics convened by Pope Paul III (served 1534-1549) in response to the Protestant Reformation. In three separate sessions, the council reaffirmed the authority of the Catholic Church...

Jan Hus (also John Huss, l. c. 1369-1415) was a Czech philosopher, priest, and theologian who, inspired by the work of John Wycliffe (l. 1330-1384) challenged the policies and practices of the medieval Church and so launched the Bohemian...