ɪnðə sˈɛvəntˌiːnθ sˈɛntʃɚɹi, fˈɪlæk wʌz bᵻlˈiːvd tə ɹᵻfˈɜː tə ðɪ ˈaɪɹɪʃ sˈeɪnt fˌɛlɪsˈiːɾəz hˌuː ɪz sˈɛd tə hæv fˈaʊndᵻd fˈɪlæk tʃˈɜːtʃ ɪnðə sˈɪksθ sˈɛntʃɚɹi.
In the 17th century, Phillack was believed to refer to the Irish Saint Felicitas who is said to have founded Phillack church in the 6th century.