Queis and Polentz had ceded temporal power over their bishoprics to the Duke, and only retained the Lordships of Marienwerder und Schönberg.
Until 1919 Garnsee had belonged to Kreis Marienwerder in the administrative district of Regierungsbezirk Marienwerder in the province of West Prussia, from 1919 to 1939 in Regierungsbezirk Westpreußen of the province of East Prussia and from October 26, 1939, to 1945 in Regierungsbezirk Marienwerder of the province of Reichsgau Danzig-West Prussia.
In 1848 von Eichhorn, the Prussian minister of worship and education, called Lorenz to Marienwerder in West Prussia as member of the government district council and of the school-board.
Their former capital of Marienburg was not the only loss, however, as the Order had to cede other areas in the Second Peace of Thorn in 1466: Pomerelia, Culmerland, Warmia, and a part of Pomesania including Marienwerder (Kwidzyn).
On 24 May, the negotiations began in Stuhmsdorf, although the Polish negotiators had their quarters in nearby Jonasdorf (Jankowiec) and Swedes in Marienwerder (Kwidzyń).