This paper provides an analysis of the relief block with the Crucifixion scene preserved in the St. Martin’s parish church in Jawor, an important town in the Duchy Jawor-Świdnica in the 14th century. According to the 17th century’s written sources the relief was originally located on the wall of the church’s cemetery mortuary, however the primary written source pertaining to the artwork in question is the inscription running along its three sides. The slab commemorates Johann Sapiens and his family. It is the earliest preserved pictorial epitaph in Silesia and in this part of Europe. Its votive purpose is stated. Moreover, a passage referring to biblical texts as well as formulations, which entered into the consecration rites of churches and altars, provide a premise to interpret this family memorial and epitaph, at the same time, also as an ossuary foundation memorial. These circumstances allow searching for possible models and references in places where the pictorial epitaph found favourable conditions for development already at the dawn of its existence as a type of sepulchral monument. At first sight, Thuringia with Erfurt seem the place geographically closest to Silesia, where stylistically and typologically related artworks have been preserved. However, the crucifix depicted in the relief from Jawor turned out to be rather typical for the contemporary Silesian sculpture too, in contrast to the assisting figures of Virgin Mary and St. John. In consequence, the references and sources of inspiration applied in the process of creation of the assisting figures in relief from Jawor should be searched in western territories of Silesia or having regard to the possibility of drawing inspiration from much older portable microplastic objects as, for example, Byzantine or Romanesque ivory.