Question: What name was given to the son of the man who defeated the usurper Allectus ?
Sentence (from "Constantius Chlorus"): Constantius I (Latin: "Marcus Flavius Valerius Constantius Herculius Augustus" ; 31 March  250 25 July 306), commonly known as Constantius Chlorus (Greek: Κωνστάντιος Χλωρός , "Kōnstantios Khlōrós", literally "Constantius the Pale"), was "Caesar", a form of Roman co-emperor, from 293 to 306.
Relevant evidence: No