The Ecclesiastical History of the English People , written by Venerable Bede in the 8th century, is a history of the Christian Churches in England, and of England generally; its main focus is on the conflict between the pre-Schism Roman Rite and Celtic Christianity. It was originally composed in Latin, is considered to be one of the most important original references on Anglo-Saxon history and has played a key role in the development of an English national identity. It is believed to have been completed in 731 when Bede was approximately 59 years old.