Ewwww, you guys are creepy. >_> I still stand by my new theory of Road, and I have more evidence for it!
Mana was probably a Noah, but Mana isn't really genetically related to Allen (we assume). I doubt we'll ever find out if he has a mother. If he isn't a Noah, though, it's a waste of character... unless it turns out to be another Exorcist.