This text presents a comprehensive dictionary of characters, places, objects and themes found in the legends of King Arthur and the Knights of the Round Table. Information is drawn from significant Arthurian sources between Gildas's "De Excidio Britanniae" (c.540) and Tennyson's 19th-century "Idylls of the King". The book contains names extracted from over 250 original Arthurian texts and includes information on characters such as Lancelot and Gawain, places such as Camelot and Camlann, objects such as Excalibur and the Holy Grail and themes such as the Sword in the Stone and the beheading game. Each entry provides a description of the name, including possible origins or historical basis of the name, and major characters and themes are discussed extensively and their evolution through the series of texts is traced.