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United States Naval Academy: Papacy and Empire
This comprehensive summary details the history of the strained relationship between the kings and popes during the time period of 955-1356. Their fight for dominance is outlined by date with primary source documents, pictures, artwork,...
Stephen Byrne
History for Kids: Frederick Barbarossa
History for Kids presents a brief history of Frederick Barbarossa, an influential emperor of the Holy Roman Empire, also known as Frederick I. Barbarossa ruled from 1155 to the year he died in 1190 and was famous for his military might...
Internet History Sourcebooks Project
Fordham University: Medieval Sourcebook: Death of Frederick Barbarossa
This site, which is provided for by the Medieval Sourcebook of the Fordham University, gives a chronicle describing the death of Frederick Barbarossa.
Internet History Sourcebooks Project
Fordham University: History Sourcebook: Germany Under Frederick Barbarossa
Fordham University provides a map of Germany under Frederick Barbarossa.