The History Of The Christian Church V4: Mediaeval Christianity, From Gregory I To Gregory VII is a book written by Philip Schaff and published in 1910. This book is the fourth volume in a series that covers the history of the Christian church from its beginnings to the present day. In this volume, Schaff examines the period of medieval Christianity from the time of Pope Gregory I to Pope Gregory VII. The book provides an in-depth analysis of the development...