This pair of names to similar?

Girl if you like it go for it! Me personally really love it and love how similar they are. Like I have a Maddox right now and if I have a girl her names gonna be Madelyn and people are telling me they are too much alike but I absolutely adore it and that's what I wanted anyways. 😁 Do it if your absolutely in love with it!! 🥰❤️

Yes!!

I would be more concerned with how people would pronounce with that spelling. Killian is fine!