306 Maxentius was proclaimed Roman Emperor.
312 Constantine I defeated
Maxentius and became the sole ruler of the Roman empire in the west with
victory at the Milvian Bridge.
1017 Emperor Henry III was born. Holy Roman Emperor
and German King, Henry was the last emperor to effectively dominate the papacy.
1216 Henry III of England was crowned. Henry was the first English monarch to
be crowned while still a minor.