Claim: Bartians, together with the Warmians and the Natangians, were conquered by the Teutonic nights from 1238 to 1240 and the knights in Barta built major castles in Bartenstein and Rößel, a town in the Warmian-Masurian Voivodeship, in northeastern Poland.
Evidence: The Bartians, together with the Warmians and the Natangians, were conquered by the Teutonic Knights 1238-1240. In Barta the Knights built major castles in Bartenstein and Rößel. Reszel [ˈrɛʂɛl (listen) (German: Rößel; Prussian: Resel or Resl) is a town in the Warmian-Masurian Voivodeship, in northeastern Poland.