Imagine for a moment that you are the youngest son of the most powerful man in the world—a man who didn’t just rule an empire, but redirected the entire course of human history. That was the reality for Constans I. To us collectors, his coins represent a fascinating, often overlooked chapter of the Constantinian dynasty: a period where the Roman world was trying to figure out how to be both an imperial superpower and a Christian state simultaneously.
Constans wasn’t supposed to be the “main character,” but history had other plans. In the shadow of his legendary father, Constantine the Great, he carved out a thirteen-year reign that was as religiously fervent as it was politically bloody.
The Youngest Caesar
Born around 323, Constans was the “baby” of the family. While his older brothers, Constantine II and Constantius II, were already being groomed for command, Constans was the backup. However, in the Roman Empire, being “backup” still meant being a ruler. In 333, at just ten years old, his father named him Caesar and handed him the keys to Italy, Africa, and Illyricum.
When Constantine the Great finally passed away in 337, the transition wasn’t exactly a peaceful family dinner. A massive purge followed, clearing out many male relatives to ensure the three brothers remained the sole heirs. Constans was elevated to Augustus, and the map was carved up: Constans took the central Mediterranean, Constantine II took the far West (Gaul, Britain, Spain), and Constantius II took the wealthy East.
Brotherly Love (or Lack Thereof)
It didn’t take long for the family dynamic to sour. Constantine II, the eldest, viewed Constans as a junior partner who didn’t deserve his massive territory. In 340, thinking he could easily bully his younger brother, Constantine II launched an invasion of Italy.
It was a fatal miscalculation. Constans may have been young, but he was surrounded by veteran generals. Near the city of Aquileia, the “junior” brother’s army ambushed and killed the eldest. Suddenly, at only seventeen or eighteen years old, Constans was the sole master of the entire Western Roman Empire.
The Defender of the Faith
For the numismatist, the coinage of Constans is where things get really interesting. This was a time of massive religious transition. Constans was a staunch, almost militant, Nicene Christian. While his brother in the East leaned toward Arianism (a different theological view of Christ), Constans became the “Iron Shield” of the Orthodox Trinity.
He famously protected Athanasius of Alexandria, the bishop who was the champion of the Nicene Creed, after he was exiled from the East. Constans even threatened his own brother with war if Athanasius wasn’t reinstated. On his coins, you begin to see a shift in symbolism—moving away from the old pagan sun-god imagery of his father’s early years and toward the Labarum (the Christogram) and the “Phoenix,” symbolizing the rebirth of a Christian Rome.
The Warrior on the Wall
Constans wasn’t just a theologian; he was a restless traveler and a capable general. In 341, he crushed the Sarmatians on the Danube. But his most famous journey took place in mid-winter 343, when he crossed the English Channel to visit Britain.
Why is this a big deal? Because he was the last legitimate Emperor to visit the island while it was still a fully functioning Roman province. He restored Hadrian’s Wall, bolstered the “Saxon Shore” forts, and stabilized the frontier. For a collector, finding a coin minted in Londinium (London) during this era is like holding a piece of the very last gasp of Roman Britain’s stability.
The Fall: The Curtains Close at Vicus Helena
Despite his successes, Constans had a “PR problem.” He was reportedly aloof, possessed a volcanic temper, and—according to the gossipy historians of the time—showed favoritism that alienated his senior officers. By 350, the military had had enough.
A high-ranking commander named Magnentius staged a coup during a birthday party in Gaul. He donned the imperial purple, and the army immediately flocked to him. Constans, realizing the tide had turned, fled toward the Pyrenees, hoping to reach the safety of Spain. He didn’t make it. Near a small town called Vicus Helena, Magnentius’s elite agents caught up with the fleeing Emperor and struck him down in a temple.
Why Constans Matters to Us Today
At Numiscurio, we often say that the “middle children” of history are the most interesting. Constans represents the bridge between the revolutionary reign of his father and the eventual collapse of the Western Empire.
His coinage—particularly the common but beautiful Fel Temp Reparatio series (“Restoration of Happy Times”)—shows an Emperor leading a barbarian captive or standing on a galley. It was a desperate, beautiful attempt to tell the Roman people that the world was still safe under the House of Constantine.
When you hold a bronze follis of Constans, you aren’t just holding a coin. You’re holding the memory of the youngest son who defied his older brother, stood up for his faith, and guarded the cold northern walls of Britain, only to be betrayed by the very men he paid to protect him.
