FL #1 - b. 1938, Honorary Research Fellow, Bangor University aka Mrs F M Llewellyn
FL #2 - b.1930-08-19, is Compton, Guy who also uses the pseudonym: Frances Lynch
FL #3 - b.1946
There is another historian, an authority on the French Economy, Dr Frances Lynch [b.1955] who is Reader in History at the University of Westminster and was married to the historian Alan Milward. She has one book in the LoC catalogue - France and the International Economy from Vichy to the Treaty of Rome - attributed to Frances M B Lynch. Assuming the LoC is accurate, the work Gwynedd has been attributed to her in error, and has been correctly combined under FL #1 here.