Ben and Sophie's son.

It's been a WHOLE DAY since the first news about the arrival of the #Cumberbaby and everyone is still 😱 and 😍😘💙👶!! pic.twitter.com/TJmBUyvmUv

— Maria P. (@LuvMaria18) June 14, 2015

Wikipedia page has been updated! 'Children: 1' 'Cumberbatch and Hunter have one child, a son(b.2015)' #Cumberbaby 💙👦👪 pic.twitter.com/yyDgCKXPM3

— Maria P. (@LuvMaria18) June 14, 2015

And there was much rejoicing.  Which I am not making up, oh no.

Ohhh, Sophie's Wiki informs me that Sophie's brothers are Timothy and Patrick.  So maybe Timothy will be their son's [second] middle name?  It'd be a bit confusing to have two males named Timothy, even of different generations.

Actually, now that I think of't, it'd be confusing to have THREE:  Grandpa Timothy, Uncle Timothy, boychild Timothy.

But hey, nicknames is how families tend to work that sort of thing out.  :D

If you read Ben's Wiki, In the Media is interesting.  Short version:  crumpets, Olivier, otters.  8)