Original sentence: According to "The Borders," by Alistair Moffat, a historical author from Kelso, Roxburgh Castle's location was the site of an ancient fort believed to be the historical site of King Arthur's "Camelot
Edited sentence: "   In his book "Arthur & the Lost Kingdoms", he provides detailed analysis of the Roman occupation of the area, the Celtic Kingdoms and the language behind place names of the Scottish Lowlands, together with the battles fought by Arthur, concluding that Roxburgh Castle was indeed Arthur's base.According to "The Borders," by Alistair Moffat, an author from Kelso who specialises in history, the ancient fort of Roxburgh Castle's was the location of what is now known as Arthur's "Camelot