Internet History Sourcebooks Project
Fordham University: Medieval Sourcebook: The Great Schism: Manifesto of Revolting Cardinals
Provides the text of the Manifesto of the Revolting Cardinals and a brief introduction to it.
Society of Archbishop Justus
Catherine of Sienna, Reformer and Spiritual Teacher
This biography of Saint Catherine of Sienna (1347-1380 CE) includes a prayer to her at the bottom of the page.
Web Gallery of Art
Web Gallery of Art: The Great Schism
This site contains a breif entry on what the Great Schism was. It discusses the causes, what happened during the Schism, how it was resolved, and what its repercussions were.
Global Catholic Network
Global Catholic Network: St. Catherine of Sienna, Virgin
This biography of St. Catherine of Sienna (1347-1380 CE) closes with a commentary on the differences between saints and ordinary people.
Mb Soft
Believe: Great Schism
Defines the Great Schism and discusses both the Eastern and Western Schism.
New Advent
Catholic Encyclopedia: St. Catherine of Siena
This biography of Catherine of Sienna (1347-1380 CE) includes links to information about many significant people or terms. Please note that "The Catholic Encyclopedia," is a historic reference source and should be viewed in the context...
Metropolitan Museum of Art
Metropolitan Museum of Art: Byzantium
From the Metropolitan Museum of Art, view an excellent online exhibit of artwork created during the Middle Byzantine period from 843 to 1261. Religious influences during this time were the inspiration for art, and this exhibit provides a...
Catholic Online
Catholic Online: Pope Leo Ix
This site provides a very brief biography of Pope Leo IX.
Other
St. Ignatius: A Time Line of Church History
A brief timeline showing the major events of Church history, from the Orthodox perspective. Includes a brief history and explanation of key events.