Altair is the name of a pistol in Final Fantasy and also a white star. :D and I looked up French surnames for his last name. His older brothers are also named after stars/pistols.
Quenten idk, I like boys names for girls. I changed it to -en because I thought it looked more feminine. Delacreaux was already because of her brother.
Carolina just seemed to fit. I was going to give her a complicated Greek name but I ended up just liking Carolina best. Vane just seemed to go with it. I don't put a lot of thought into my names XD whatever name pops into my head is usually what I go with.