Caitríona

The actress, Caitriona Balfe, bears this name; she plays Claire in the TV series on Starz, based on the 'Outlander' series of novels by Diana Gabaldon.

Catriona, which is a variant of Caitríona, is a character in the book "Bad Blood" by Rhiannon Lassiter. Her nickname is Cat, and she is infuriated because her step-sister Katherine's nickname is also Kat. I think Caitríona is an interesting and exotic sounding equivalent to Katherine, which is classy, but overused. I like more now, because I read that it comes from the name Hekate, the Greek goddess of witchcraft, not some the Christian virtue ideal of "pure" i.e. chaste. Though it does remind of Caitríona Ruane, Minister for Education in Northern Ireland who is under a lot of scrutiny right now for abolishing the Eleven Plus exam. Though I think what she did was right, as it was a very unfair exam.