Sophia is my younger sister, she's turning 5 at the end of the month. Is she too young to honor? I'm not having kids any time soon, but probably (hopefully) within the next five years or so. All my other PFC combos have family mns, and I do like the name Sophia.
Sienna is for meaning. Mine and SO's anniversary is in October. I can't think of anyone else to honor, so I thought it might be sweet to include a reference to me and SO.