This survey of the development of the Frankish Church under the Merovingian and Carolingian kings (approximately AD 500 - 900) is the first of its kind to appear in English. It is not a story of unimpeded advance towards the Church of medieval France but rather of painful adaptation. It takes account of unsolved problems: the reaction of the Church to heresy, to Judaism, to the Frankish ethos of marriage, and to the conversion of peoples outside Francia...