I really like Dominic Steven. Plus, that way you honor tradition but he might feel more like an individual, since he's not one of 3 Stevens haha
Lol ahh it's halfsies in here too! Steven does not has to be the first name, so long as it is part of his name.
I like Steven Nathaniel :-)
Well, if it's tradition to have Steven as the name, then Steven Nathaniel :)