The tripartite organization is traceable clearly enough in the Household of Elizabeth, as in that of her predecessors. There was, of course, a close co-operation at many points between the different departments; and, indeed, the simplicity of the original scheme had inevitably been interfered with, as the sovereigns began more and more to retire from their hall and to subdivide their chamber in order to adapt it to the complicated needs of an increasingly luxurious private life. The department of the court-yard, moreover, would appear, long before Elizabeth's time, to have shed many of what must be supposed to have been its original functions. The hereditary Lord High Constable had left no _constabularius_ behind him at court, and although the Earl Marshal, also hereditary, continued to exercise certain functions, such as an oversight over the heralds, he was in no sense the head of a Household department. The Knight Marshal, who exercised a jurisdiction over breaches of peace within the verge (_virgata_) of twelve leagues round the court, was nominally at least his deputy, but the only other marshals in the Household were officers of the Hall. Similarly the oversight of the guard seems to have passed to the Chamberlain. Nor had the Marshal any longer the responsibility for the stable which the etymology of his name suggests.[86] The Stable was, indeed, still a distinct department, but its head was the Master of the Horse, who, although he ranked as one of the three chief officers of the Household, was of comparatively recent origin.[87]