Johannes Janssen
Born: April 10, 1829
Died: December 24, 1891 (aged 62)
Bio: Johannes Janssen was a Catholic priest and German historian born in Xanten. After graduating from the Rektoratsschule in Xanten he was educated at the universities of Münster, Leuven, Bonn and Berlin, afterwards becoming a teacher of history in Frankfurt-am-Main.
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