I personally prefer the spelling Kristina, however I still like Kristiina better than Christina. It may look a little tacky if you name your child this if you do not happen to be Finnish yourself. Only because some people love accusing others of trying too hard to be unique.
― Anonymous User 9/24/2011
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Kristiina I of Sweden (18 December [O.S. 8 December] 1626 – 19 April 1689), Countess Dohna, was Queen regnant of Sweden from 1632 to 1654. She was the only surviving legitimate child of King Gustav II Adolf of Sweden and his wife Maria Eleonora of Brandenburg.