This is really hard

We've been thinking for two weeks now but we still haven't come up with a name for the new family member. How come it's so damn hard?

I found it much easier to come up with different girl names....but I guess I can't name him something girlish...can I? LOL :-D

So...throw us some ideas....we definitely need your help. The only criteria is that it should work with his big brother's name - Wilmer. It should flow saying their names together in one sentence.

HELP!!