Pope gregory i: Did you mean...?

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...

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...

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...

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...

Although both the Byzantines and the Armenians were Christian, the types of Christianity they professed had important differences that led to a lack of recognition and tensions between the two groups and a considerable part of their relationship...

A portrait of Pope Julius II (r. 1503-1513 CE) by the Italian Renaissance artist Raphael, c. 1512 CE. (National Gallery London)

The tiara of Pope Pius IX (in office 1846-1878). Made in 1854. Made of a trio of gold crowns set with diamonds, emeralds, sapphires, pearls, and other jewels around a silver-thread fabric. It measures 35 cm (13.7 in) in height and diameter...

A 1645 illustration showing a cardinal checking that Pope Innocent X (in office 1644-55) is indeed a man.

A c. 1450 illustration showing Pope Joan giving birth during a procession. Pope Joan was a legendary female pope of the Middle Ages said to have reigned from 855 to 858. Her existence is disputed. (Spencer Collection)

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...