The separate provision for the area went back to the days of exile in France of Charles II following the execution of Charles I in 1649. As a reward to those cavaliers who had been faithful to the Stuart regime, Charles II exercised his royal prerogative by making a grant of the portions of tidewater Virginia that were not seated. In the year of the execution the Northern Neck was granted to the following seven supporters of the King: Lord John Culpeper, Lord Ralph Horton, Lord Henry Jermyn, Sir John Berkeley, Sir William Morton, Sir Dudley Wyatt, and Thomas Culpeper. Efforts of the representatives of this group were frustrated in Virginia by the suspension of royal government, and therefore the proprietary charter was ineffective for a time. It had, however, been recorded in chancery in 1649 and was revived after the restoration of Charles II to the throne. In 1662 and again in 1663 Charles II ordered the Governor and Council of Virginia to assist the proprietors in "settling the plantations and receiving the rents and profits thereof." But portions of the area had been seated since 1645, and legal obstructions were brought forth by Virginia planters and the Council to defeat the efforts of the proprietors.

A second appeal to the King led to a solution maneuvered in part by the Virginia resident agent in London, Francis Moryson. The original patent of 1649 was surrendered and a new charter was issued on May 8, 1669, to the Earl of St. Albans, Lord John Berkeley, Sir William Morton, and John Trethewy. The new document required the recognition of grants in the Northern Neck made by the Governor and Council prior to September 29, 1661, and it limited the title of the proprietors to that land which would be planted and inhabited within twenty-one years. The political jurisdiction of the area was still under the Virginia government. The laws of the colony were to remain operative, and in effect the grant was "to create a subordinate fief or proprietorship within Virginia." But considerable confusion prevailed over the retroactive recognition of grants, and many landholders sought confirmation of their ownership. "Besides there are many other grants," stated Governor William Berkeley, "in that patent inconsistent with the settlednesse of this government which hath no barr to its prosperitie but proprieties on both hands, and therefore is it mightily wounded in this last, nor have I ever observed anything so much move the peoples' griefe or passion, or which doth more put a stop to theire industry than their uncertainty whether they should make a country for the King or other proprietors."

The confusion that existed was further confounded by the grant of Charles II on February 25, 1672⁄73, of all of Virginia for thirty-one years to Lord Arlington and to Lord Thomas Culpeper, son of one of the original patentees of the Northern Neck by the same name. These two proprietors of the whole colony were to control all lands, collect rents, including all rents and profits in arrears since 1669, and exercise authority that sprang from grants previously made. Up until 1669 amid all the controversy over control of the Northern Neck, grants were regularly made by the local government on the basis of headrights as revealed in the land patent books. After that date the number decreased; and in March, 1674⁄75, the first land grant of 5,000 acres, later George Washington's Mount Vernon, was issued to Nicholas Spencer and John Washington of Westmoreland in the name of the proprietors with the common seal being affixed to the grant by Thomas Culpeper and Anthony Trethewy. By this date Thomas Culpeper had obtained from the proprietors of 1669 recognition of one-sixth interest in the Northern Neck for him and his cousin on the basis of their fathers having been original patentees.

Opposition to the proprietary grant of the Northern Neck in Virginia led to efforts of the Assembly, encouraged by Governor William Berkeley, to buy out the rights of the proprietors. Apparently the proprietors were willing to sell and set the price of £400 each for the six shares then held in the charter. Negotiations to complete the transaction were interrupted by the outbreak of Bacon's Rebellion, and the status of the proprietary grant hung in suspension. Meanwhile, Thomas, Lord Culpeper was appointed Governor of Virginia but did not arrive in the colony until 1680. The next year Culpeper bought up the proprietary rights in Virginia, both the rights of the other proprietors in the Northern Neck and the rights of Lord Arlington for all of Virginia. In 1684, however, he gave up the Arlington charter of 1673 to the crown in return for an annual pension of £600 for twenty-one years.

Lord Culpeper retained the Northern Neck charter and made efforts to encourage settlement of the area. But the terminal date of the twenty-one year period stipulated in the charter of 1669 was approaching, and he appealed for a renewal of the grant on the basis that the amount of land intended by Charles II had not been taken up. Considering the restriction an impracticable one, King James II issued a new charter in 1688 with Lord Culpeper as the sole proprietor and with no time limit specified. Through changes and additions prompted by Culpeper's knowledge of Virginia's geography, the area of the grant included in the Northern Neck was substantially enlarged over the boundaries stated in the previous charters of 1649 and 1669, the additions later being interpreted as extending Culpeper's claim beyond the Blue Ridge Mountains to the foot of the Alleghenies. The area as outlined in 1688 was as follows with the additions to the former descriptions shown in italics:

All that entire tract, territory or parcel of land situate, lying and being in Virginia in America and bounded by and within the first heads or springs of the rivers of Tappanhannocke alias Rappahanocke and Quiriough alias Patawomacke Rivers, the courses of the said rivers, from their said first heads or springs, as they are commonly called and known by the inhabitants and descriptions of those parts, and the Bay of Chesapoyocke, together with the said rivers themselves and all the islands within the outermost banks thereof, and the soil of all and singular the premisses.

Soon after receiving this third charter, Lord Culpeper died on January 27, 1688⁄89. Despite efforts that were again made by the colony to eliminate the proprietary grant, it was confirmed to Culpeper's survivors and passed by marriage to the Fairfax family.

After the 1669 charter, the proprietors opened an office in the colony and an agent was designated to handle land grants and collect fees. The scant records that survive indicate that from 1670 to 1673, Thomas Kirton was agent in the land office in Northumberland; from 1673 to 1677, William Aretkin was appointed the proprietor's "agent in Virginia"; and from 1677 to 1689, Daniel Parke and Nicholas Spencer were agents in the land office in Westmoreland.

Beginning in 1690 land patents in the Northern Neck were entered separately and the grant books that have survived give a good account of the land policy under the proprietors. Philip Ludwell served as agent from 1690 to 1693 and began an orderly handling of the proprietor's interest at the land office in Westmoreland. Throughout his term as agent he used a form for land grants in establishing his authority which reviewed a part of the checkered history of the Northern Neck. The introductory portion of this form was as follows:

Whereas King Charles the Seacond of ever blessed memory by his letters pattents under the broad seale of England beareing date at Westminister the eighth day of May in the one and twentyeth yeare of his reigne Annoqe Dom. 1669, His Matie was gratiously pleased to give graunt and confirme unto Henry then Earle of St. Albons, John Lord Berkley, Sir William Morton, Knt., & John Trethewy, Esqr., there heires & assignes all that intire tract territory or parcell of land lyinge & being betweene the two rivers of Rapah. and Patomack and the courses of the said rivers and the Bay of Chesapeake, as by the said graunts, recourse beinge had there unto, will more at large appeare, and