In the 17th century, the village of Biaroza belonged to the Sapieha, a powerful magnate family in the Polish-Lithuanian Commonwealth, who founded a fortified monastery and a palace in the village. In 1648, the monastery was presented to the Carthusian monks who came from the Italian town of Treviso and settled in the monastery. Pope Alexander VII granted the title of prince to Lew Sapieha, who was thankful for the noble deed. The monastery was to be built on the place where a wooden cross was found in the forest. Therefore the monastery was also named after the Holy Cross.