Kiana is a variation of the name Diana. Guess Fat Xiao gave us clues in comments like this by the aranaras regarding Paimon.
>People regard Diana and the moon as one and the same.
>Diana also has the name Omnivaga ("wandering everywhere"), not because of her hunting but because she is numbered as one of the seven planets; her name Diana derives from the fact that she turns darkness into daylight (dies)