Constantinus in Harpers Dictionary of Classical Antiquities

A usurper who had himself proclaimed emperor in Britain during the reign of Honorius and Arcadius, in A.D. 407, reigning for four years and securing possession of Gaul and Spain, until defeated in 411 by Constantius, the able general of Honorius. By him Constantine was taken prisoner, carried to Ravenna, and there put to death.

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