Emma's brother would be called...

[BernardBlacksHangover]

Kit
Rupert
Fergus
Caspar
Jonah
Marcus
Wilfred
Nathaniel
Albert
Oscar
Vincent
Lewis
Theodore

Any of these^^ or something else?

We can't have anything ending with N or beginning with I. Also needs to sound nice in a Home Counties and an Irish (Ulster) accent.

Opinions and suggestions most welcome.

Mark

Francis
Frederick
Elijah
Grayson
Christopher

Matthew or rupert

Robert

William
Edward
Arthur

I know an Emma with a brother Sebastian. Any good?

Love Arthur, but DH doesn't and it seems to be a front runner for the Royal baby, if it's a boy.

We like Sebastian, but can't think of any nice shortenings. Assume it will get shortened as it's four syllables. Also, it ends with N, which sounds a bit weird with our surname.

William or Max

I quite like William, but DH has vetoed. We know quite a few of them anyway (I know none of our names are exactly uncommon, but William is especially popular among our friends' children).

Gregory

I am and my brother is Robert as suggested above!!!

James or jack

Emma and Matthew sounds nice.

Nathaniel
Luke
James

DH vetoed Robert as he knows too many adult Roberts. I like it though.

We like Matthew - have added it to the list.

Emma and Nathaniel.
Suggestions;
Emma and Jonathan
Emma and Nicholas
Emma and David

I've always loved Marcus

Wilfred, Lewis or Theodore would be my choices.

Marcus from your list, or Jake as suggested by a pp.

I know Emmas with brothers called Sam, Jack and Matthew.

Not keen on Jake as it reminds me of Baby Jake on CBeebies!

Nicholas is nice, but DH not keen.

Fergus
Jonah
Wilfred
Nathaniel
Albert
Oscar
Vincent
Lewis
Theodore

These are the ones that I like best from your list.

I would suggest: -

Ross
Raphael
Ferdinand
Lloyd
Lennard
Mitchell

I like Emma and Oliver

The Emma I know has a brother called Joseph.