Jarentowski

I am looking for past or present relatives of Franz and Thomas Jarentowski (brothers born 1857 and 1867) and a possible sister, Anistasia Jarentowska.Born in the Krakow area (not the big one, the little Krakow (different diacriticals).Thomas married Anistasia Kowalski in Poland 1880s?)Any little tidbit of information would be appreciated.