Trêve de Dieu
As with later clerical efforts, such as the Peace and Truce of God movement in millennial France, the law may have been of limited effectiveness. Fergus Kelly notes that no cases relating to the Cáin Adomnáin have been preserved. Thus, it is unknown whether the harsh penalties which it mandates, which may have contradicted the general character of Irish law, were rigidly enforced.