This was explained in theory by the principle that if the king himself held his court, it lost, by the fact of his presence, all the authority which he had delegated to it; for the moment the only authority existing in it was that of the king, just as in the ancient curia regis there was the principle that apparente rege cessat magistrates.
Around the sovereign was his Curia Regis or body of councillors, of whom the most important were the justiciar, the chancellor and the treasurer, though the feudal officers, the constable and marshal, were also to be found there.
The circuits of the itinerant justices became regular instead of intermittent; the judicial functions of the Curia Regis were delegated to a permanent committee of that body which took form as the court of kings bench (Curia Regis in Banco).
During the 12th and at the beginning of the 13th centuries the curia regis continued to discharge these functions, except that its importance and actual competence continued to increase, and that we frequently find in it, in addition to the vassals and prelates who formed the council, consiliarii, who are evidently men whom the king had in his entourage, as his ordinary and professional councillors.
Under the superintendence of the Curia Regis and the exchequer, the sheriff still remained the kings factotum in local affairs.
Saxon Witenagemot and Norman Curia regis seem very much alike.
In his work Tractatus de legibus Angliae, Ranulf de Glanvill treats of the procedure of the curia regis as a court of law.
Disappointed, to find that he could gather few supporters; the justiciar and the bureaucrats of the Curia Regis would give him no assistance; they worked on honestly in the name of the absent king.
And his successor, in place of the justiciar - who had presided over all causes vice regis- separate heads were established in the three branches into which the curia regis as a judicial body had been divided: justices of common pleas, justices of the king's bench and barons of the exchequer.