It is known... ..by everyone except Jon Snow. He knows nothing.

Why is Bernie Sanders' campaign like Jon Snow? (Game of Thrones spoilers) They're both ""dead.""

What rhymes with Jon Snow? He doesn't know. , Sorry for the lame joke, just made it up.

Jon Snow contracted malaria after getting stabbed... ""How did you get malaria from a stab?"" ""Malaryan Steel.""