Assume the author is the same D.Walther who also appears as a publisher (D. WALTHER, 42, PICCADILLY.) on some early books? Does anyone know more about him?

Also authored many other items according to CBA catalog.

David Brady produced what I suspect will be the definitive account of David Walther's life and writings in his 'David Walther (17941871) and His Family: With a Catalogue of Walther's Known Publications' in Brethren Historical Review xiii (2017) 9-58.    Timothy Stunt