Feud and blood feud between customary law and legal process in medieval and early modern Europe.

In the past two or three decades the famous essay by Max Gluckman (Gluckmn 1955) has become the reference point for the many historical studies on the feud and revenge. In his study Gluckman emphasized how the system of feud fulfilled an essential function of balance within strongly conflicting societies, both by acting as a true regulatory system of social control and by performing preventing the dreaded and inevitable retaliation represented by episodes of violence.