The two provinces of Epirus , along with the provinces of Macedonia , Thessaly , and Achaia , became part of the diocese of Macedonia ( capital Thessalonica ) .
In 327 , Emperor Constantine split the diocese of Moesia into Dacia and Macedonia .
The two provinces of Epirus , along with the provinces of Macedonia , Thessaly , and Achaia , became part of the diocese of Macedonia ( Macedonia Macedonia ) .
In 327 , Emperor Constantine split the diocese of Moesia into Dacia and Macedonia .