Lord Hoster Tully is a minor character in the third season. Prior to his death, Hoster Tully was the Lord of Riverrun, the Lord Paramount of the Trident and the head of House Tully, one of the Great Houses of Westeros. He was the father of Edmure, Catelyn and Lysa and the older brother of Brynden. He ruled over the Riverlands from the castle of Riverrun.