One of my teacher's daughters had the name Philomene which is a French version of Philomena. I think it's very unique and I like Philomene more than Philomena.
This name has also been used in The Netherlands, in this spelling (not just Filomena was used here). I should know, since this was the first name of my (Dutch) great-greatgrandmother.
Philomena is quite old-fashioned here, however, so one can consider it a rare name on those born in The Netherlands after 1980.
This is my mothers name. She doesn't like it much, therefor I guess it's put me off it. Thankfully names are not carried on down the way they used to be years ago so I've avoided passing it onto my children! It is normally a nun's name I would have thought!