Constans
Constans was a Roman Emperor who ruled from 337 to 350 AD. He was the son of Emperor Constantine the Great and was known for his efforts to maintain the unity of the Roman Empire. His reign was marked by conflicts with his brothers and challenges from external enemies, particularly the Sassanian Empire.
During his rule, Constans promoted Arianism, a Christian doctrine that was controversial at the time. He faced opposition from various factions, including those loyal to the Nicene Creed. Constans was eventually overthrown and killed in a rebellion, leading to a shift in power within the empire.