"In the name of houses Blackgard, Baratheon, and Targaryen, I demand for Lord Auster Keller to present himself for execution. Fail to comply and I will personally bring down your home and execute all who stand with House Keller."
―Trevyr Blackgard to the Keller household.
The Siege of Kell was the final battle of the Fourth Border Wars, taking place approximately sixty years before the beginning of the Game of Thrones series. The castle of Kell, the stronghold of House Keller, was taken by forces loyal to Lord Trevyr Blackgard, King Maekar Targaryen and Lord Lyonel Baratheon in an assault after a siege.