This is our son's name. It is an Irish name, whose root is from a Gaelic word meaning constant or always. I believe the Irish spelling of the name is Feidlham, or something like that. Here's my question, we pronounce the name "FAY-lim" -- a pronounciation we found in an Irish baby names book. We know of only one other Phelim, who always pronounced it "FAIL-im." Are both acceptable? Where do the two pronounciations come from?