Macedonia (theme)
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Macedonia was a theme (or province), organised by Empress Irene, about 800, out of the Theme of Strymon. It included the area from Adrianople and the Evros valley eastward along the Sea of Marmara; Adrianople was the capital of the theme. It did not include the territory of ancient Macedon, which (insofar as the Byzantines controlled it) was the Theme of Thessalonica. John I Tzimisces replaced this with a ducate of Adrianople, which included much of his Bulgarian conquests.
[edit] Reference
Warren Treadgold, A History of the Byzantine State and society (1997), pp. 421, 478, et passim.