It's my favourite of all the
Christi- names, probably because I had two great-grandmothers named
Christiana. What are the odds? (I wouldn't use it, though: people would assume we were a religious family. Maybe as a mn, if I had a whole bunch of daughters.)
They were both known as
Chrissie. One had no mn; the other was
Christiana Margaret, which I like a lot.
Ana would work, but if you want a daughter called An(n)a, there are better ways of making sure you get one.
Ruth ChristianaChristiana Sarah