Chełmno Land
In 1772 as a result of the First Partition of Poland, Chełmno Land (with the exception of Toruń, annexed in 1793) was seized by the Kingdom of Prussia. Between 1807 and 1815 Chełmno Land was a part of the Polish Duchy of Warsaw and Toruń was even the duchy's temporary capital in April and May of 1809. In 1815 it was annexed by Prussia again, first it became part of the Grand Duchy of Posen, but in 1817 was incorporated into the province of West Prussia.