The first Peace of Prenzlau of 3 May 1448 established Brandenburg's control over most of the territory, except for the northern Pasewalk and Torgelow region, which was to remain in Pomerania and is not considered to be a part of Uckermark anymore.
His worries focused on the Brandenburger estates of Torgelow and Pasewalk, which the Dukes of Wolgast held since 1369 as securities for a loan.