House Tully of Riverrun is a Great House of Westeros. Its most senior member carried the title of Lord of Riverrun and Lord Paramount of the Trident, until the Red Wedding. The current head is Lord Edmure Tully, son of the late Hoster Tully. The Tully sigil is a silver trout on a red and blue background. Their house words are "Family, Duty, Honor."
At the onset of the War of the Five Kings, House Tully came under attack by House Lannister and lent its support for House Stark when they came to their aid in the liberation of the Riverlands. House Tully has since been formally stripped of lands and titles for rebellion against the Iron Throne, with Lord Edmure a captive of House Frey following the Red Wedding.
Later, Ser Brynden Tully gathered the remaining Tully forces and reclaimed Riverrun from the Freys, reopening conflict between the Tullys and the Iron Throne. The Freys lay siege to Riverrun, and were later assisted by the Lannisters on the orders of King Tommen I. Ser Jaime Lannister managed to end the siege by convincing Edmure Tully to command the garrison to lay down their weapons in return for clemency and protection. Brynden was killed during a final stand with Lannister and Frey forces while Edmure was returned to the Freys as a prisoner. Following the deaths of most of House Frey and the defeat of Cersei Lannister at King's Landing, Edmure is freed and restored to his titles and lands.