โAnd there's a brilliant book on this, on just how historical Merlin was believed to have been in the Middle Ages by Anne Lawrence Mathers, The True History of Merlin, the Magician.โ
Why: It explores how Merlin's feats of magic were believed to be real historical events.
Dominic Sandbrook, Host on The Rest Is HistoryKing Arthur: The Mysteries of Merlin (Part 3)

