Information from Rhythm of War and Dawnshard is not allowed on the Coppermind until the books are out. See Coppermind:Spoilers for details on how you can still work on this content.
Dif Smedry is Alcatraz Smedry's cousin.
The following link contains major spoilers for The Dark Talent. Please be very sure you have either read the book or are happy to be spoiled on some major points of the story.