At the time of the survey, the feoffees told Mercer "that he might proceed in his Buildings and Improvements on any the said Lots not before granted," promising that they would at any time make him "any Title they could lawfully pass." A proposal by Fitzhugh to give title to any lots already purchased or any which Mercer might take up under terms of the Port Act of 1705 was discouraged by Mercer's lawyer, Mr. Hopkins, who took the view that, since the three surveys conflicted, the deeds would not be good. Accordingly, Fitzhugh and Mercer applied for an "amicable Bill," or suit in chancery, in the General Court, in order "to have Savage's or any particular Survey established." The request was shelved, however, and still was unanswered in 1748.
The extra row of lots and the court's instructions to Savage to make his survey with "Regard to the Buildings and Improvements then Standing" seem to be correlated. Savage made a significant notation on his survey plat: "The lots marked 16, 17, 18, 19, 20, & 21 joining to the Creek are in possession of Mr. John Mercer who claims them under Robinson, Berryman, Pope & Parry, & under Ballard & under John Waugh dec^{ ed}, all w^{ ch} he says have been built on and saved." On the Buckner plat the lots bearing these numbers comprise a block of six in the southwest corner of the town, extending up from the creek in two 3-tiered rows (fig. 2). The plat included the lots near the head of the "gutt" where the courthouse appears to have stood, as well as the land on which Structure B (the foundation of Mercer's mansion) was excavated. The lots appear in the same relationship on Savage's survey, except that the new row bounds them on the west.
We know that the Robinson-Berryman-Pope-Parry lot was the same lot originally granted to Robert Alexander in 1691, numbered 19 on Buckner's plat. It was granted to its later owners according to the Gregg survey in 1707, and was then described as "being the first Lott known in the Survey Platt by number 1." From Mercer we have learned already that Gregg made "his number 1 in the corner at Buckner's 19." The other five lots were claimed under Ballard and John Waugh. Waugh was granted one lot in 1691--Buckner's number 20--and acquired two more in 1707. All three appear to have been in the corner block of six lots. In any case, these six lots equal the number of lots known to have been granted the above-listed lot holders. Both of Ballard's lots were granted in 1707. His lot number 19 (Gregg survey), where Mercer first lived, is described as "bounding Easterly with a lott surveyed for Mr. John Waugh Westerly with a Narrow street Northerly with a lott not yet surveyed, Southerly with the first main Street which is parallel with Potomac Creek." We do not know which of Waugh's lots is meant, nor do we know Gregg's street plan, except that it was at odds with Buckner's. But it is probable that Ballard's lot (Gregg's number 19) was the same as Buckner's number 21, that the crosstown street on Gregg's plat lay to the south of the lot rather than to the north of it, as on Buckner's plat, and that one of Waugh's lots lay to the east of it.[62]