This introduction puts the text into its early medieval context and explaining Hincmar's sometimes-dubious methods of argument. The book is a translation of the most significant source for the attempted divorce, a treatise known as De divortio Lotharii regis et Theutbergae reginae, written in 860 by Archbishop Hincmar of Rheims. It sheds much light on the Frankish world of its protagonists and on early medieval Europe in general. In 860 those supporting Lothar II's divorce were still able to discomfort Hincmar by drawing parallels between the trials of Ebbo and Theutberga; the matter was only finally settled in 868. The book offers eye-opening insight not only on the political wrangling of the time, but also on early medieval attitudes towards a host of issues including magic, penance, gender, the ordeal, marriage, sodomy, the role of bishops, and kingship.