Pope Leo X: Did you mean...?

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.

The Unam Sanctam (1302) was a papal bull issued by Pope Boniface VIII (served 1294-1303) requiring the complete submission of all people, including kings, to the authority and dictates of the pope. As the Church was understood as holding...

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...

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)

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...

A 15-16th century manuscript illustration of Pope Joan, a legendary female pope of the Middle Ages said to have reigned from 855 to 858. Her existence is disputed. (Bibliothèque nationale de France).

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...

Portrait of a Humanist by Sebastiano del Piombo c. 1520. The identity of the person is unknown. Dietrich Rauchenberger has suggested that the painting may depict Leo Africanus (1485-1554).

An early title page from The History and Description of Africa by Leo Africanus (1485-1554), first published in 1526.