After murdering several disciples, a mad king of this place eats his own hands, kills his family and jumps into a fire. Agrestes is one ruler of this place, whose name may ultimately derive from the war god of the Trinovantes tribe. A hero starts out as a kitchen boy at this place in a version of the “Fair Unknown” motif. An artifact held in this place was given its shape to prevent quarrels according to Layamon (“LAY-uh-mun”) and Wace (“wass”). This place supersedes the role of Caerleon (10[1])(“care-LEE-on”) in later writings, such as the Post-Vulgate cycle, in which it is destroyed at the climax of the invasion of Logres (“LOH-gers”) by King Mark. This place, which is just downriver from the island of Shalott, contains an artifact gifted by King Leodegrance (-5[1])(“LEE-oh-de-grantz”) and the Siege Perilous, which is a vacant chair. For 10 points, the Round Table (10[1]-5[1])lies in what stronghold of King Arthur? (10[2])■END■ (10[5])