Is Katarina useable for us?

[Squirrelmirrel]

I just wondered if Katarina (or Katerina) is a useable name with no mainland European heritage? We are half British and half Irish and I just love Katarina, I also love the nickname Kitty, which we would use as a nickname from birth.

Not asking for opinions on Kitty, it's a name commonly used in Ireland as a nickname for various longer forms. It feels very familiar and we love it.
But I'd love a longer birth cert name and I MUCH prefer Katarina (or Katerina) to Katherine.

I'm not keen on just using Kitty, I want her to have choices if she doesn't suit Kitty as an adult.

Great choice. Beautiful name and lovely nickname.

It seems to vary a bit. I’d spell it Caitríona and pronounce it Ca-tree-uh-na. Also Irish.

I just don't like the pronunciation as much. Also Catriona will just get pronounced as Cat-ree-oh-na over here.
I would ideally like the name to not begin with C too as we already have a C sibling.
I like the pronunciation Katerina more than Katrina I think. But I haven't totally ruled it out.

Katerina is your best bet, @Squirrelmirrel . Katrina will be Trina.

Katerina is lovely.