Lysa Tully is the sister of Catelyn Stark and younger daughter of Lord Hoster Tully. She grew up with Catelyn at Riverrun, where she fell in love with Petyr Baelish. When the girls grew older, Lysa went to a drunk Petyr and had sex with him. He thought she was Catelyn. Baelish is thrown out when a pregnant Lysa went to her father and asked to marry him. Instead her father married her to Jon Arryn of the Eyrie, a man old enough to be her grandfather and the keeper of the Vale of Arryn. Lysa's father, Hoster Tully made marriage to a soiled Lysa as the price of the Riverrun alliance and troops for Robert's Rebellion. Lysa believed that marriage would give her child a name, but her father gave her a potion to cause a miscarriage. This maybe why she is so obsessive a mother, and she has never f