@kittenofdoom, She can't possibly be any louder or more active than our boys, 1 and 2, though she will certainly add to the chaos, and we're looking forward to it... mostly!!
@badtime, thanks, and I agree that the Welsh origin of Seren might serve to confuse that the forename also shares a Welsh pronunciation, which we don't want. It leaves an interesting choice. I like Selene, but perhaps not enough. Luna, the Roman variation does not fit well either. We had considered Sofia, or Sorella, but it quickly loses it's original meaning and our reason for choosing those names. We'll certainly rethink and revisit with any news though!
@sundanceclaire Io has always been my first choice name for a girl, call me crazy, I love it, and it's one that the more you hear it the better it sounds. Each to their own though.