Treaties of Cölln and Mewe

The Treaties of Cölln and Mewe, concluded in 1454 and 1455, transferred the Neumark (New March) from the State of the Teutonic Order to the Electorate of Brandenburg.

[4] In 1374/1388, the Lords of Wedel transferred their rights on territories around Schivelbein and Falkenburg to the Teutonic Order state,[4] their eastern neighbor.

[4][5] After the First Peace of Thorn (1411), Grand Master (Hochmeister) Heinrich von Plauen intended to pawn the Neumark to the Polish king, and prepared a respective treaty.

[10] To that end, the Grand Master Ludwig von Erlichshausen pawned the Neumark to Brandenburg[9] and many of his Prussian holdings to mercenary groups in 1454.

[9] In June, the noble estates of the Schivelbein area approached the Brandenburgian elector for protection against frequent Polish and Pomeranian raids.

[12] He wrote down a respective memorandum, directed at his successors, wherein the latter were urged to not accept such claims, keep the Neumark within the "German lands and the Holy Roman Empire and the worthy Electorate Mark of Brandenburg" and not have it "brought to non-German tongue".