 Moreover, the archbishops, bishops, abbots and priors used to take their place in the national council on account of the estates they held in chief (in" capite") of the English Crown.But the beneficed clergy took no part in it.The increasing frequency of royal appeals for money grants and the unwillingness of the bishops to be responsible for allowing them had brought Stephen Langton, Archbishop of Canterbury, as early as 1225, to summon proctors of cathedral, collegiate and conventual churches to attend his provincial synod, and gradually that representative principle became part of the system of Convocation.