Flavius Iulius Constantius (317–c. 361 CE) was the son of Fausta and Constantine I, brother of Constans I and Constantine II, husband of Flavia Aurelia Eusebia and posthumous father of Flavia Iulia Constantia II, Caesar 324–337 CE, Augustus 337–361 CE. At his father Constantine’s death, Constantius inherited enormously challengi…