Lysa Arryn

Hoster Tully's younger daughter was married to Jon Arryn, a man old enough to be her grandfather, to seal the Vale's place in the rebellion. She had wanted someone else entirely, and the marriage was unhappy from the first day to the last.

When Jon Arryn died after asking dangerous questions about the queen's children, it was Lysa who fled the capital and sent the letter that pulled Eddard Stark south. Two of the great catastrophes of the age pass through a woman married off at fifteen to buy an alliance.