What does post-Galfridian refer to in writings about King Arthur?

Answer 1

It is a reference to Geoffrey of Monmouth. Galfridus is the latinized version of Geoffrey. Geoffrey was a monk in the twelfth century who established most of the basic elements of the Arthurian legend in a book called "The History of the Kings of Britain." Post Galfridian would mean versions of the legend or elements thereof that date from after Geoffrey's writing. Michael Montagne