Lady Arryn was actually responsible for killing her own husband, not the Lannisters. Jon Arryn's death pretty much spawned all of the events that made this entire series possible.

Game of Thrones ’ cultural zeitgeist status unfortunately doesn’t shield it from plot holes and inconsistencies—and there are ...

She’s to take them first to the Vale to Lady ... Arryn and from there across the Narrow Sea to Pentos. Pentos, you may recall, is where Daenerys (Emilia Clarke) was at the very beginning of Game ...