South Prussia
When the area later forming the territory of the Kreis Meseritz was first annexed to Prussia from 1793 to 1807 it formed the "Meseritzer Kreis" (Meseritz district) within the Province of South Prussia, then governed by the "Departement der Kriegs- und Domänen-Kammer zu Posen" (Department of the chamber of war and domains at Posen).