 There have been attempts by some modern researchers and authors of fiction to link Morgan le Fay with the Morrígan.Morgan first appears in Geoffrey of Monmouth's "Vita Merlini" in the 12th century.In some Arthurian legends, such as "Sir Gawain and the Green Knight", Morgan is portrayed as a hag whose actions set into motion a bloody trail of events that lead the hero into numerous instances of danger.