But for the most part the assembly was the instrument rather than the source of power. The directing influence was usually in the hands of the great planter who combined the functions of merchant and country gentleman, lawyer and politician and social leader. His knowledge of law and his familiarity with affairs, his social connection and influence, his greater leisure, the traditional authority which hung about his position, all disposed the small planters to accept his initiative and abide by his decisions. It was difficult to defeat his candidate for the burgesses; difficult for the elected burgess not to defer to his opinion. And if the great planters were influential among the burgesses, they were predominant in the council. The home Government expected the governor to manage the affairs of the colony by gathering to his support the most wealthy and influential men in it. Accordingly, the great planters were customarily appointed to the local offices and to the council. Generally speaking, the governor and the great planters established a community of interest on an exchange of favors. The small group of men in the council, related by marriage, ambitious, shrewd, and pushing, already wealthy or bound to become so, supported with reasonable loyalty the royal interests, and found their reward in exploiting, through the political machinery which they controlled, the resources of the colony for their own profit. This compact was the basis of the long regime of Berkeley. But the governor was made aware of the source of his strength when he trespassed upon the preserves of the oligarchy which supported him. His attempt to control the Indian trade drove men like Colonel Byrd over to the side of Bacon, and the authority of the governor collapsed like a pricked balloon. Of this oligarchy of politician-planters, Colonel Byrd was indeed the most notable. Already wealthy and influential, in 1687 he went to London and secured, through the favor of William Blathwayt, the office of receiver-general of the customs, to which was attached the office of escheator; offices, among the most important in the colony, which he held until his death. It was the duty of the receiver to receive the quit-rents, and to receive them, at the option of the taxpayer, in tobacco in exchange for certificates at the rate of about eight shillings per hundredweight. Tobacco so received was stored in warehouses, and sold at the close of the year by the receiver-general for the benefit of the customs. The tobacco offered for the quit-rents was naturally of inferior quality. Such as it was, the king favored selling it at auction. But the Virginia assembly preferred to have the receiver dispose of it by "private arrangement"; and in fact Colonel Byrd found it convenient to make such "private arrangements" with burgesses or members of the council, who sometimes paid as much as six shillings for tobacco which would bring ten or twelve in the open market.