As far as virtue names go, they are quite unique. (I've certainly never met a Charity or Harmony) They're not too matchy either. I like it as a sibset.
OT"UnityValkyrie!" (as seen in your title line.)Sorry. I had to mention again how much I love that combo. I don't love what Ms M. did with her life. But I still have to admire her parents' naming ability.