I think [name_f]Adeline[/name_f] and [name_f]Clementine[/name_f] are too close. I pronounce the endings the same tho. I do think [name_f]Ada[/name_f] would be better, or [name_f]Adelaide[/name_f].
I think [name_f]Clementine[/name_f] and [name_f]Tallulah[/name_f] are great together!
I don’t really see [name_m]Caspian[/name_m] as fitting with [name_f]Clementine[/name_f] style-wise, and I dislike the idea of [name_m]Caspian[/name_m] for a girl.