Board Thread:TV Show Discussion/@comment-29325269-20160814152628/@comment-79.177.97.71-20160816051646

The phrase has nothing to do with the Starks. It is not meant to thank. Its meaning is equal to "a Lannister always pays his debts": the people of the north do not forget nor forgive wrongs done to them, either by other Northern (even by their leaders) or from other regions of Westeros, and eventually will settle score withe their wrongers.

The first to use that phrase was Robb, when discussing what to do with Rickard Karstark: he was certain that Harrion Karstark would never forgive him for killing his father, because "the north remembers".

Lord Manderly, Justin Massey, Lady Dustin and Theon also used that phrase with association of the Red Wedding.