The War of The Rock was a war that occurred in The Westerlands between the years 308 AC and 309 AC. It was fought between the two factions of Tyrek Lannister and Martyn Lannister over Lord Paramouncy of the Westerlands and the dominion of Casterly Rock. The war would come to an end after several skirmishes in the Westerlands and the timely intervention of Aegon VI Targaryen who put a stop to the war. When the dust settled, Tyrek Lannister was victorious and secured his place in Casterly Rock, with his cousin, Martyn Lannister being sent to the Wall.