House Tully in the 0.01 news - Total War: Ice & Fire (Book Inspired) Mod for Total War: Attila
Proud and loyal, the Tully will be one of the Two playable factions of the riverlands. They will ambush all the invaders on there land with the help of some vassal houses. However those vassal houses will come later, in the third update (V0.03).
Source: moddb.com