Prussians besiege Teutonic castles and manage to capture all except for Elbing (Elbląg) and Balga in the eastern regions of Natangia, Barta and Warmia; …

The Teutonic Knights manage to gather a coalition against Swietopolk: Dukes of Masovia are given territories in Prussia, Dukes of Greater Poland receive Nakel, and Dukes of Pomerellia, brothers of Swietopolk, hope to regain their inheritance.

Swietopolk builds a castle at Zantyr, where Nogat separated from the Vistula, and launched a blockade of Elbing and Balga.

While the castle withstands Teutonic attacks, the blockade is smashed by cogs.

…Elbing (Elblag).

The “Elbing Vocabulary,” a short German-Prussian glossary written between 1300 and 1400, provides one of the few written documentations of Prussian, the West Baltic language sometimes called Old Prussian.

The most conservative of all Baltic languages, the Prussian of the Elbing vocabulary contains more archaisms than Lithuanian and differs significantly from both Lithuanian and Lettish, or Latvian.

Spoken by the inhabitants of the area that later became East Prussia (now northeastern Poland and the Kaliningrad Oblast of Russia) prior to the German colonization of the area which began in the thirteenth century, it will become extinct in the seventeenth century.

A few experimental communities involved in reviving a reconstructed form of the language exist today in Lithuania, Poland, and other countries.

…Elbing (Elbląg).

...Elbing (Elblag) had not participated in the treaty, with Thorn and Elbing surrendering to Sweden.

Swedish-held territory in Poland has been reduced to some towns in Royal Prussia, most notably Elbing, ...