Although it is not explicitly said in the text of A Dance with Dragons, the fact that Davos’s skills as a sailor are needed makes it plain it’s somewhere accessible by sea. More importantly, Davos’s reaction to learning where—he considers asking to be imprisoned again—and the statement that it’s a…
The Shepherds are considered a humble house with little prestige. No member of this house has yet appeared, though a Qarl Shepherd has been mentioned, as well as an ironborn reavers called Ralf the Shepherd and the Black Shepherd who may be of the house.
"Dragons," Moqorro said in the Common Tongue of Westeros... "Dragons old and young, true and false, bright and dark. And you. A small man with a big shadow, snarling in the midst of all."
From the rest of the conversation, the "small man" is indeed supposed to be Tyrion, and this surely means…
https://news.yahoo.com/george-rr-martin-don-t-053000622.html