The story of King Arthur and his knights is a narrative that spans centuries, a myth recreated by a variety of people for a variety of purposes. This thesis, by investigating key moments in the history of the Arthurian tradition, seeks to reveal the fluidity of Arthurian tales and identify some of the features that make them prevalent and influential across time. Part I examines the development of the Arthurian tradition, identifying significant time periods and works of literature that contributed to the formation of the overarching legend. Part II discusses two key eras that illustrate how the myth has been appropriated and the ways it contributed to that particular time: the ideas of knighthood and the Holy Grail found in Nazi Germany, a...