At the same time that a rector was thus gradually settled in every parish, with rights and duties which soon became defined, and sanctioned by law, the bishop continued to keep a body of clergy about him in the cathedral, whose position also gradually became defined and settled. The number of clergy in the cathedral establishment became settled, and they acquired the name of canons; they were organised into a collegiate body, with a dean and other officers. The estates of the bishops were distinguished from those of the body of canons. Each canon had his own house within the walled space about the cathedral, which was called the Close, and a share in the common property of the Chapter. Besides the canons, thus limited in number, there gradually arose a necessity for other clergymen to fulfil the various duties of a cathedral. These received stipends, and lodged where they could in the town; but in time these additional clergy also were organised into a corporation, and generally some benefactor was found to build them a quadrangle of little houses within, or hard by, the Close, and often to endow their corporation with lands and livings. The Vicars' Close at Wells is a very good and well-known example of these supplementary establishments. It is a long quadrangle, with little houses on each side, a hall at one end, and a library at the other, and a direct communication with the cathedral. There also arose in process of time many collegiate churches in the kingdom, which, resembled the cathedral establishments of secular canons in every respect, except that no bishop had his see within their church. Some of the churches of these colleges of secular canons were architecturally equal to the cathedrals. Southwell Minster, for example, is not even equalled by many of the cathedral churches. It would occupy too much space to enter into any details of the constitution of these establishments.