Note 134 — Chapter VI · THE AREA OF POLISH SPEECH
Reading edition
Given in fief by the Polish kings to the Dukes of Brandenburg and exonerated in 1656 from the oath of vassalage, except the four circles of Braniewo (Braunsberg) (383 sq. mi., 54,613 inhab.), Liebark (Heilsberg) (427 sq. mi., 51,912 inhab.), Olsztyn (Allenstein) (529 sq. mi., 90,996 inhab.) and Reszel (Rössel) (333 sq. mi., 50,472 inhab.), which together under the name of Duchy of Warmie made part of Royal Prussia and were lost at the first partition.