Sia - The root of "Kissi" from Guinea (West Africa, Forest), he means "the first-born daughter" - then I named my daughter! And recently told me a Persian, that he was there in his own language "black" means. Sia is probably the Welsh form of Joan, meaning also "under God's grace," or this: Sia embodied in Egyptian mythology as "General of Lower Egypt", the essential component parts intellect, insight and wisdom.