Prussia, including the Bishopric of Culm were put under the jurisdiction of the Archbishopric of Riga as metropolitan. In the 1250s Jutta von Sangerhausen came to live in the region and settled at Bielczyny. In 1256 she founded the St. George church. It was her wish to be interred at the town's cathedral-church and upon her death in 1260 her wish was granted. The 5 May is her memorial day. The nearby village of Bielczyny and the cathedral soon became a destination for pilgrims to her shrine. The town witnessed many wars and uprisings. The nearby Old Prussians besieged the town in 1268 and 1273. Additionally in the 15th century the town experienced the wars between Teutonic Knights and Poland. In 1410 the Polish army took the town and the bishop of Chełmno Arnold Stapil made a tribute to Polish King Władysław II Jagiełło. In 1422 Chełmża was taken again by the forces of the king and destroyed in large part. In 1454, the town joined the anti-Teutonic Prussian Confederation, upon the request of which Polish King Casimir IV Jagiellon re-incorporated the region and town into Poland that same year, what was eventually confirmed following the Thirteen Years' War in 1466. Synods of the Roman Catholic Diocese of Chełmno were held in Chełmża several times between the 14th and 17th centuries. In 1552, Chełmża was visited by Polish King Sigismund II Augustus. After Riga's dissolution in 1566 the bishops of Chełmno attended the councils of the Ecclesiastical province of the metropolitan of Gniezno. This practice was recognised by the Holy See by the Bull De salute animarum in 1821, when the Diocese of Chełmno became de jure a suffragan of the Archdiocese of Gniezno. Chełmno diocese was enlarged on that occasion (Górzno, Krajna and Działdowo). In 1621 and 1627 the town hosted the court of Polish King Sigismund III Vasa along with Prince Władysław. The Swedish invasions of Poland of 1626–29 and 1655–60 brought devastation to the town. In the beginning of the 18th-century Russian, Saxon, Swedish armies went through the area along with supporters of Stanisław Leszczyński. The constant warfare led to the fall of the city, and its breaking point was reached due a plague that happened in years 1708–1710. A next series of wars in 1733–1735 and in 1756–1763 along with fire in 1762 almost completely destroyed the city. After the First Partition of Poland on 15