Constantius II was the 61st Roman Emperor. After Constans defeated Constantine II, Constans ruled the west, and Constantius ruled the east. In 305 Constans was assassinated by a usurper, Magnentius. Constantius defeated Magnentius, becoming the sole ruler. Later, Constantius elevated his cousin Constantius Gallus to the rank of Caesar, but executed him three years later. In 355, Constantius made Gallus' younger brother, Julian, Caesar. Constantius died in 362.
