House Myatt

During the Faith Militant's uprising against the Iron Throne, House Myatt sided with the rebels.

King Maegor I Targaryen answered by bringing Balerion over their holdfast and burning it to the ground, as he did with other centers of the revolt. No source says where that seat once stood.

Riding along the western shore of the Gods Eye with the recruits bound for the Wall, Yoren and his group come across a camp of twenty or thirty men in mail and helms. Some are wounded, carrying spears and shields, and only one lame horse remains among them. Their banner shows a spotted treecat, yellow and black, on a brown field.

Yoren doesn't recognize the sigil and, unsure which side they favor, gives the camp a wide berth, wary that desperate men might want his horses. Arya Stark later sees the same device again as Lord Tywin Lannister marches his host out of Harrenhal.

During the Red Wedding, Arya Stark watches a man with a treecat on his jerkin step out of a tent on the grounds outside the Twins.

Among the banners of the western lords escorting Lord Tywin Lannister's body back to Casterly Rock was that of House Myatt.