This is a study of marriage litigation in the archiepiscopal court of York (1300-1500) and the episcopal courts of Ely (1374-1381), Paris (1384-1387), Cambrai (1438-1453), and Brussels (1448-1459). All these courts were, for the most part, correctly applying the late medieval canon law of marriage, but statistical analysis of the cases and results confirms that there were substantial differences both in the types of cases the courts heard and the...