Constantine II (316–340) was Roman emperor from 337 to 340. He was the second son of Emperor Constantine I and the eldest son of his second wife, Flavia Maxima Fausta. He was proclaimed Caesar by his father shortly after his birth. He was associated with military victories over the Sarmatians, Alamanni and Goths during his career, for which he was granted a number of victory titles.  He held the consulship four times – in 320, 321, 324, and 329.
 
n April 340,[45] Constantine launched an invasion into Italy to claim territory from Constans. Constans, at that time in Naissus, sent a number of troops to confront him, and Constantine was killed in an ambush near Aquileia.  Constans then took control of his brother's realm, whose inhabitants seem to have been largely unaffected by their change in ruler.