The Chełmno Voivodeship () was a unit of administrative division and local government in the Kingdom of Poland since 1454/1466 until the Partitions of Poland in 1772/1795. Together with the Pomeranian and Malbork Voivodeships and the Prince-Bishopric of Warmia it formed the historical province of Royal Prussia. Its capital was at Chełmno (). History The Land of Chełmno (later known in German as Kulmerland) had been part of the Polish Duchy of Masovia since 1138. It was occupied by pagan Old Prussian tribes in 1216, who struggled against their Christianization instigated by Bishop Christian of Oliva. After several unsuccessful attempts to reconquer Chełmno, Duke Konrad I of Masovia in 1226 called for support by the Teutonic Knights, who indeed approached and started a Prussian campaign, after the duke promised them the unshared possession of the Chełmno territory as part of the Order's State. In the course of the Order's decline after the 1410 Battle of Grunwald, the citizens of Chełmno, Toruń (Thorn) and Lubawa (Löbau) joined the uprising of the Prussian Confederation, which sparked the Thirteen Years' War between the Knights and the Kingdom of Poland. After the Order's defeat, the Chełmno Land fell back to Poland according to the Second Peace of Thorn and together with the adjacent Michelauer land in the east formed the Chełmno Voivodeship of the Polish Crown, since the 1569 Union of Lublin part of the Polish–Lithuanian Commonwealth. The voivodeship was annexed by Prussia during the First Partition of Poland in 1772, except for the city of Toruń, which was not incorporated into the Province of West Prussia until the 1793 Second Partition. Administration Voivodeship Governor (Wojewoda) seat: Chełmno Regional council (sejmik generalny) Grudziądz Regional councils (sejmik poselski i deputacki) Kowalewo Radzyń Administrative division: Chełmno Land, (Ziemia Chełmińska), Chełmno Chełmno County, (Powiat Chełmiński), Chełmno Toruń County, (Powiat Toruński), Toruń Grudziądz County, (Powiat Grudziądzki), Grudziądz Radzyń County, (Powiat Radzyński), Radzyń Kowalewo County, (Powiat Kowalewski), Kowalewo Michałowo Land, (Ziemia Michałowska), Lubawa Brodnica County, (Powiat Brodnicki), Brodnica Nowe Miasto County, (Powiat Nowomiejki), Nowe Miasto Lubawskie Voivodes Augustyn z Szewy, 1454–1455 Gabriel Bażyński, 1455–1474 Ludwik Mortęski, 1475–1480 Mikołaj Dąbrowski, 1480–1483 Karol z Napola, 1484–1495 Jan Dąbrowski, 1498–1513 Jan Luzjański, 1514–1551 Stanisław Kostka, 1551–1555 Jan Działyński, 1556–1583 Mikołaj Działyński, 1584–1604 Maciej Konopacki, 1605–1611 Ludwik Mortęski, 1611–1615 Stanisław Działyński, 1615-1615 Jan Jakub Wejher, 1618–1626 Melchior Wejher, 1626–1643 Mikołaj Wejher, 1643–1647 Jan Działyński, 1647–1648 Jan Kos, 1648–1662 Piotr Działyński, 1663–1668 Jan Gniński,