Constantius Chlorus in Harpers Dictionary

Chlorus, son of Eutropius, and father of Constantine the Great, received at Paris the title of Caesar, which he obtained by his victories in Britain and Germany. He became the colleague of Galerius on the abdication of Diocletian; and, after bearing the character of a humane and benevolent prince, he died at York, and had his son for his successor, A.D. 306.