I did meet a lovely lady once who rocked the name Philomena. She was the mother of Phil Lynott of Thin Lizzy.
Other than that I would agree with other posters who lumped the names in with Assumpta, Attacta, Concepta, these names came to my mind too before I read the full thread. It's the kind of baby name that makes people assume things about the parents who named her- full on religious, or traveller ethnicity, or under huge pressure from grandparents to honour someone in the family.
If you love your baby, PLEASE don't name her Philomena, there are so many lovely biblical/religious names out there - here are a few to consider Abigail, Anne, Elizabeth, Eve, Hannah, Leah, Mary, Maria, Miriam, Naomi, Rachel, Ruth, Joan, Therese. Even Bernadette is better than Philomena. If you absolutely love the name Philomena then use it for a second or third name.
Can you hear yourself? "Philomena, Philomena, PHILOMENA, come in now, your dinner is poured out"