The Slupsk Region was occupied by indigenous Slav inhabitants, which was called at that time ‘wendyjski’ nation. The largest group in this society was peasantry. Autochthons had however, also representatives among townspeople and nobilities. The ‘wendyjski’ language was known by managers of ducal granges. Some nobility families like von Puttkamer family, Palubic family and Tessen family knew this language. The introduction of native language to church ceremonies resulted in necessity of supplying people into suitable religious publications like catechisms or psalms.

One of the oldest publications in Pomerania in 1586 was ‘Duchowne pieśni Marcina Lutra y ynszich nabożnych mązow z niemieckiego w Slawiesky ięzik wilożone' authorships of Simon Krofey - the Bytow pastor. ‘Mały Catechizm D. Marcina Luthera, niemiecko-wandalski albo słowiński, to jesta z niemieckiego języka w słowiński, wystawiony y na jawność wydan z przydatkiem Siedem psalmów pokutnych Dawida y inszich potrzebnych rzeczy, osobliwie Historiy pasyi naszego Pana Jezusa Według ewangelisty Mattheusza y niektórych piesn duchownych' was also printed in Gdansk.

The author of these sacred writings was the Smoldzino Luteran pastor Michael Pontanus (English: Bridgeman, German: Brüggemann), son of the turner from Slupsk. The first information about the Polish pastor Paul Buntowski originates in about 1560. The second pastor, knowing Polish language, who officiated at church in Kobylnica village, was Abel Poltzin. In 1635 Paul Mantey became a pastor in Rowy village; however, Michael Pontanus became a deacon in the St. Peter Church in the Old Town in Slupsk.

In this period the neo-Gothic style reigned in building and art. From the half of 16th century - the Renaissance was introduced. In 1580÷1587 the Ducal Castle was rebuilt into the Renaissance style. A well-known Italian architect Wilhelm Zacharias rebuilt the castle. Zacharias added one storey into the existing building. He also changed the submissive of facade and interior. The Church of BVM, originating in 15th century, has a very important place among Slupsk masterpiece of arts. The renaissance poupit made by the Slupsk sculptor Paul Waltersdorf in 1609 is worth paying attention to it. It is important to pay attention to the "Crucifixion" picture at the altar (authorships of Kolobrzeg painter Jacob Fanke).