Alan Wilson and Baram Blackett are researchers who present a controversial interpretation of British history, focusing on the claim that there were two King Arthurs. Their work posits that the first King Arthur (5th century) was a Romano-British warlord who fought against the Saxons, while the second King Arthur (6th century) was a historical figure who reigned in South Wales and was a central figure in the narrative of the Holy Grail and Arthurian legends.

Wilson and Blackett argue that traditional historians have overlooked or suppressed evidence of King Arthur II. They claim he was the son of King Meurig of Glamorgan and Gwent, ruling in the 6th century. Their research suggests that Arthur II's kingdom centered in South Wales, with significant sites like St. Peter's Church in Briton Ferry and Llantwit Major.

One of their boldest claims is that King Arthur II led a voyage to America in 562 AD, centuries before Christopher Columbus. They propose that he sought refuge there after a comet-induced catastrophe caused devastation in Britain. Wilson and Blackett point to ancient maps, Welsh genealogies, and oral traditions as evidence, arguing that these have been misunderstood or ignored by mainstream scholars.

Their findings, though intriguing, are widely criticized by academic historians for lack of rigorous evidence and adherence to conventional methodologies. Despite this, their work has gained a devoted following among those who challenge mainstream historical narratives.