History and Tradition: Noricum , Carantanum, and Bishop Vergilius:
Styria was origionally a Roman Proviince called Noricum . As Noricum it had been a Celtic kingdom. At that time it was much larger than modern Styria. It became part of the Roman Empire in 16BC. (Noricum)
After 660AD we see the name Carantania being used for this land. The area had become Slavic and was called Carantanum by Paul the Deacon in 664AD. It lost its independence and became part of the Frankish Empire under Charlemagne in 745AD. (Karantania)
Vergilius, Bishop of Salzburg helped Christianize what was now called Carinthia in 767AD.
Thus we honor this bishop and his Christianizing work.