House Tully is one of the Great Houses of Westeros. It rules over the Riverlands from the castle at Riverrun and the head of the house is the Lord of Riverrun. Lord Hoster Tully:The head of the family. Ser Edmure Tully:Son and Heir Catelyn:eldest daughter, married to Lord Eddard Stark Robb, Sansa, Arya, Bran and Rickon Stark:Grandchildren Lysa: Youngest daughter, married to Lord Jon Arryn. Robin Arryn:Grandson Brynden Tully:Hoster's youngest brother, called the Blackfish.