Using my maiden name as a baby name?

My brother is not having kids & my cousin(male) has his father's last name, so that is the end of the family last name. Bearing that in mind, I wanted to give one of my children the name. My SO is on board. My maiden name is Cristian.

I think it's cute for a boy, but I'm also in love with Cristiana/Christiana (Cristi-ah-na) for a girl.

Which do you like better?