A Discourse Of The Subtill Practises Of Deuilles

This early text discusses the supposed subtle practices of devils, witches, and sorcerers, reflecting the demonological worldview of its time. It is historically important as evidence of early modern fears about spiritual deception, and readers will find warnings, examples, and moral commentary on alleged witchcraft.

This appears to be a title rather than a personal author name. If you mean G. Gyffard as the author, I could not verify a reliable biographical identification and would treat it as an obscure or uncertain figure associated with witchcraft-related literature.