Maybe you are not sure if your "Polish" (Galician/Ruthenian/Austrian) ancestors are Roman or Greek Catholic. (They might also be Jewish or Uniate or Protestant).
Recently I posted about SAINTS NAMES DAYS as the means for naming children.
NAMING PATTERNS (or RELIGIOUS BELIEFS) may help you determine what religion your ancestors practiced in the Old Country. So here are some names that I wrote down after reading through a GREEK CATHOLIC PARISH film at LDS that are 18th and 19th century! (In LATIN)
SOPHIA
MAGDALENA
PARAVKEVIA
TATIANA
EVA
XENIA
BASILIUS
DEMETRIUS
PELAGNIA and PELAGIA
MELANIA
LUDMILLA
POLICARPEUS
HEMILIAN
AMBROSUS
CONSTANINUES
PATALEON
THECLA
And here are some that you also see in POLISH CATHOLIC RECORDS
THADDEUS and THEODORUS
CATHARINA
ANNA
ANTONINA
ROZALIA and ROSALIA
LAURENTIS