I feel very strongly that the name should be spelt
Bryn and used only for boys. It irritates me a lot that people on this board get so worked up about names like
Madison being used for girls yet
Bryn or worse,
Brynn, is fine. I know this site says it is masc and fem but I think that's only because it's been used by girls in the US. Every name book I have lists it as a masculine name only. In Wales and the rest of Britain as a whole, it would only be used for boys. I've heard of lots of men (mainly Welsh) called
Bryn.
Anyway, my rant over. I guess as you are in the US you could get away with it on a girl. I'd still prefer it as a middle name though. No idea who
Phil Hartman is so no issue there for me.
Brynn Cecilia does work, however.