Z dziejów kościoła pw. św. Krzyża i reformackich zabudowań klasztornych w Grudziądzu

The article is the first attempt to present the history of the Reformed Franciscan Church in Grudziądz, which now partially serves as a prison church. The text is based on archival sources in the Archives of the Province of the Reformed Franciscans in Cracow and few scientific works. The primary sources allowed for the exact dating of the church construction designed by Antonio Solari and postponing the construction date for 1751–1755. Also the circumstances of the foundation and the participation of the Catolic nobility, monks and the Bishop of Chełmno in it were presented. At the same time, the construction of the church and its furnishing was shown on the background of other monastic foundations in the Prussian Province of the Reformed Franciscans established in 1750. The text discusses also the architecture of the church built by Beniamin Kala in comparison with other foundations of the Reformed Franciscans. While presenting the furnishing, the author used the research on the monastic workshops which produced main and side altars in accordance with the rule of the Order. The examples of such, coming from Brodnica and Podgórz, were presented and discussed. The presentation of the history of the monastery after the dissolution of the Order during the Prussian partition, the transformation of the monastery into a prison and then a NKVD’s transition camp during the WW2 complements the knowledge about the monastery, the church and the history of its interior.