my nephew's name is Charlie. He's only going to be 1 year older than DS, and we hope the cousins will see a lot of each other.
Too similar?
(I imagine shouting at one of them and them both turning round. Will everyone think I'm trying to find a name that sounds like Charlie?)
I like names ending in o but DP has vetoed Leo, good friend's DS is Theo, good friend's brother is Milo ... and I can't think of any more!