Later in about 800 AD, a new province of the Byzantine Empire – Macedonia, was organised by Empress Irene out of the Theme of Thrace. It had no relation with the historical or geographical region of Macedonia, but instead it was centered in Thrace, including the area from Adrianople (the theme's capital) and the Evros valley eastward along the Sea of Marmara. It did not include any part of ancient Macedon, which (insofar as the Byzantines controlled it) was in the Theme of Thessalonica.