Roman Empire February 8 – Constantius III is appointed co-emperor (Augustus) with his ineffectual brother-in-law, Honorius, and becomes the real ruler of the Western Roman Empire. March 25 – Venice is founded at twelve o'clock noon (according to legend) with the dedication of the first church, San Giacomo, at the islet of Rialto (Italy). June 7 – Emperor Theodosius II marries Aelia Eudocia, a woman of Greek origin. The wedding is celebrated at Constantinople with chariot racing in the Hippodrome. September 2 – Constantius III dies suddenly of an illness; his wife Galla Placidia becomes, for the second time, a widow. She departs with her children Grata Honoria and Valentinian to the court of Constantinople. Castinus campaign against the Franks: A Roman army under command of Castinus fights against the Franks in Northern Gaul.
roman empire february 8 – constantius iii is appointed co-emperor (augustus) with his ineffectual brother-in-law honorius and becomes the real ruler of the western roman empire march 25 – venice is founded at twelve o'clock noon (according to legend) with the dedication of the first church san giacomo at the islet of rialto (italy) june 7 – emperor theodosius ii marries aelia eudocia a woman of greek origin the wedding is celebrated at constantinople with chariot racing in the hippodrome september 2 – constantius iii dies suddenly of an illness; his wife galla placidia becomes for the second time a widow she departs with her children grata honoria and valentinian to the court of constantinople castinus campaign against the franks a roman army under command of castinus fights against the franks in northern gaul