Complete speculative guess. I only suggest it because I've not seen it mentioned, and I expect the reveal will be more intricate and fulfilling than how I lay this out but my general assumption is:

John Rubinstein (Judge Manchester)

1)Manchester - football team - nicknamed the red devils
2)' he is ma'.... 'he is manchester

various plot points from episode 14 in season 5 could be red herrings or legitimate clues.
 
3)The first card in the poker game is ACE of HEARTS.
4)Lisbon:" the action is on you judge"
5)Judge:"...like a childrens book....goodnight moon" - http://en.wikipedia.org/wiki/Goodnight_Moon