In this book, the author makes use of the methodology he developed in Origins of Arthurian Romances (McFarland 2012) in order to reevaluate the post-Roman history of Britain. He begins by delving into the historical contexts of the key traditional players of the fifth century--Hengest and Gwrtheyrn. A better understanding of these two characters allows for a reexamination of the persons and events of the fifth, sixth, and seventh centuries. The text that follows entirely realigns how those centuries can be seen from a chronological as well as a military and political standpoint. The fifth century was not a time of British and Germanic fragmentation as they separated from Rome, but one of slow integration and the formation of kingships that were a result of the economic realities of surviving without the dying giant.