JG
James Huntley Grayson
James Huntley Grayson is a scholar of the religions and folklore of Korea. He is Emeritus Professor of Modern Korean Studies in the School of East Asian Studies at The University of Sheffield. He also has the Korean name Kim Chŏnghyŏn and published some articles under this name as well.
Excerpt from Wikipedia, available under CC BY-SA 4.0.
Books

Myths and Legends From Korea
2001
ISBN 9780700712410
Korea
2002
ISBN 9781315029405