Crispus
brother of Claudius Gothicus and father of Claudia, who by her husband Eutropius was the mother of Constantius Chlorus. Thus Crispus was the great-grandfather of Constantinus Magnus.
From William Smith (ed.), Dictionary of Greek and Roman Biography and Mythology. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.