oleistych
Oleistych is a surname of East Slavic origin, found among Ukrainian and Polish populations and in related diaspora communities. The name is typically treated as a patronymic or adjectival surname formed with the -ych suffix, a common element in East Slavic and Polish naming patterns. Its exact root is not consistently attested across sources, but it is generally linked to traditional Slavic onomastic formations that derive from personal names or descriptive stems.
The surname appears in historical and contemporary records in Ukraine and Poland, and among migrants in North
Notable individuals with the surname Oleistych have not, in widely available reference works, achieved broad recognition.