The name 'Sytko' is likely a nickname derived from the noun 'syto', which means 'honey decoction', or from the word 'sito', used to denote 'a dense mesh for sifting flour'. It may also have dialectal origins from the term 'hand drum'. The first records of this name date back to the mid-16th century. For example, in 1565, Sythko Kulbajowicz is recorded as a peasant from Ratne; the same year mentions the patronymic Sachko Sytkovych, also a peasant from Ratne. In 1648, Sitko Mihaly from the village of Bystra is referenced.