Skip to content
Catholic Online SHopping 20% off RE-Grand Opening SALE

RE-Grand Opening
FREE Shipping over $49 (lower 48)

John XXI

Short Cuts

Author and Publisher - Catholic Online

Image of John XXI

Facts

Birth: 1215
Death: 1277

Pedro Juliano, or Peter of Spain, was born in Lisbon c. 1210/20. The son of a physician, he studied at the University of Paris and taught medicine at the University of Siena. He became cardinal bishop of Tusculum in 1273 and attended the Second Council of Lyons the following year. He was elected pope in 1276. He hoped to re-establish unity with the Eastern church but was in his nine-month papacy more concerned with fighting the influence of Averroism at the University of Paris and with an attempt to launch a crusade. Peter is the author of Summulae logicales, a treatise on logic, and The Poor Man's Treasury, a book of cures. He wrote a medical treatise on the eye, a book on the soul, and a commentary on The Celestial Hierarchy of Dionysios.


John XXI Comments


More Saints






Browse Saints by Category


Popular Saints

Rank

Saint

71.

Image of St. Lawrence - Martyr

St. Lawrence - Martyr

Saint Lawrence was one of seven deacons who were in charge of giving help to the poor and the needy. When a persecution broke out, Pope St. Sixtus was condemned to death. As he was led to ... continue reading

72.

Image of St. Katharine Drexel

St. Katharine Drexel

St. Katharine Drexel is the second American-born saint to be canonized by the Catholic Church. This amazing woman was an heiress to a large bequest who became a religious sister and a ... continue reading | shop

73.

Image of St. Francis Xavier

St. Francis Xavier

St. Francis Xavier was a Navarrese-Basque Roman Catholic missionary born in the Kingdom of Navarre on April 7, 1506. His father was a privy counselor and finance minister to King John III ... continue reading

All Popular Saints

Saint of the Day

Image of St. Helena

St. Helena

Empress mother of Constantine the Great. She was a native of Bithynia, who married the then Roman general Constantius I Chlorus about 270. Constantine was born soon after, and in 293, Constantius was ... continue reading

More Saint of the Day

Saint of the Day by E-Mail

Saint of the Day newsletter icon

Learn about the lives of the saints and other saint resources, including a calendar, over 5,000 saint biographies, our most popular saints, and a list of patron saints. 7 days / week. See Sample


Required


Female Saints

Image of St. Frances Xavier Cabrini

St. Frances Xavier Cabrini

St. Frances Xavier Cabrini was born as Maria Francesca Cabrini on July 15, 1850 in Sant' Angelo Lodigiano, Lombardy, Italy. She was born two months premature and the youngest of thirteen children. Unfortunately, only three of her siblings survived past adolescence and ... continue reading

More Female Saints



Saint Calendar
Saint Feast Days
Saint Fun Facts

Angels

Image of St. Michael the Archangel

St. Michael the Archangel

Saint Michael the Archangel isn't a saint, but rather he is an angel, and the leader of all angels and of the army of God. This is what the title "Archangel" means, that he is above all the others in rank. St. Michael has four main responsibilities or offices, as we ... continue reading


Image of St. Gabriel, the Archangel

St. Gabriel, the Archangel

St. Gabriel is an angel who serves as a messenger for God to certain people. He is one of the three archangels. Gabriel is mentioned in both the Old and the New Testaments of the Bible. First, in the Old Testament, Gabriel appears to the prophet Daniel to explain his ... continue reading



Saints Fun Facts

Saints Fun Facts for St. Dominic of Silos

St. Dominic of Silos

Benedictine abbot and defender of the faith. Born in Canas, Navarre, Spain, circa 1000, he entered the Benedictines at San Millan de Ia Cogolla. King Garcia III of Navarre challenged him when he became abbot of the monastery, and Dominic refused to surrender part of ... continue reading

Saints Fun Facts for St. Dorothy

St. Dorothy

According to her apochryphal tradition, she was a resident of Caesarea, Cappadocia, who when she refused to sacrifice to the gods during Emperor Diocletian's persecution of the Christians, was tortured by the governor and ordered executed. On the way to the place of ... continue reading



Christian Saints & Heroes

Image of

The Assumption of Mary

By Deacon Frederick Bartels

Why is the Assumption important? First, lets look at what this dogma is all about. On 1 November, 1950, Pope Pius XII issued the Apostolic Constitution Munificentissimus Deus in which he proclaimed the dogma of the Assumption: "Mary, the immaculate perpetually Virgin ... continue reading

More Christian Saints & Heroes

Never Miss any Updates!

Stay up to date with the latest news, information, and special offers.

Catholic Online Logo

Copyright 2017 Catholic Online. All materials contained on this site, whether written, audible or visual are the exclusive property of Catholic Online and are protected under U.S. and International copyright laws, © Copyright 2017 Catholic Online. Any unauthorized use, without prior written consent of Catholic Online is strictly forbidden and prohibited.