This is DC3, we have two DDs Bethan and Catherine. We've been calling the baby "Nigel" as a joke since we found out he was a boy but at this rate it's going to stick, especially amongst our DDs, unless we name him properly and soon!
He has red hair like his daddy and one of his sisters, and his surname is two syllables starting with "Th". We don't like very popular names, but at the same time we don't want to go too far out there. Think position 60-250 in the baby boy name charts - the further down the better.
We really liked "Flynn" but it sounds too close to "Catherine" his sister. We also liked "Ethan" and "Nathan" but they sound too close to "Bethan" his other sister 
At one point we considered "William" but already having a "Catherine" and being born the day before the royal wedding.. yeah. Not good.
Our shortlist is currently:
Raphael
Gabriel (DH's favourite, but I worry over the "Gay" nickname possibility?)
Ellis
Elliot(t)
Other ones we've considered (but probably ruled out) are:
Asher
Elias
Myles
Griffin
Thoughts on the top four especially appreciated, but any other ideas welcome as you never know. However we've been running around in circles with this for months so I doubt there's a name we haven't considered!
Thanks!!