He's a little 6 wheeks old Swiss sort of agouti called Dylan (but will hereafter be known as GP3)
He's an almost carbon copy of GP1 but not such defined 'ticking' and his eyes are reddy/brown.
I'm thinking GP1 chose him thinking "Hmm, you handsome fellow you look like ME" 
They are currantly in the neww paddling pool in the kitchen. GP3 is hiding under a towel, GP1 is alternating between prowling and sprawling out.
There were some other very baby babies but they were with their mum . But GP1 seemed to have taken a shine to this little boy (and yes he is definately a little boy) so here he is.
Will dophotos if he ever surfaces from the towel. 