64 Pa. Stat. § 166
In all cases where an actual settler has, adverse to the original warrantee, take possession of a tract of land, north and west of the rivers Ohio and Allegheny and Conewango creek, which had been surveyed on an original warrant, and has made such actual settlement, residence and improvements as are described in the ninth section of the act, entitled, "an act for the sale of vacant land within this commonwealth," and an agreement or compromise hath taken place between such actual settler, or his legal representative, and the original warrantee, or his legal representative, prior to the passing of the act, entitled, "an act providing for the settlement of certain disputed titles to land north and west of the rivers Ohio and Allegheny and Conewango creek," passed March 20, 1811, the evidence whereof hath been or shall be proved or acknowledged, and recorded in the proper county, that in such case the commonwealth shall cease to have any further claim to said tract, and the title to the same shall be confirmed to such warrantee and settler, or their legal representatives accordingly: Provided always, That it is not intended by the provisions of this section to recognize any agreement or compromise, where a less quantity than one hundred and fifty acres clear of expense has been agreed upon, to be granted to the settler, excepting in cases where the warrantee furnished the settler with money, provisions or other articles, to enable said settler to improve and settle such tract of land; in which cases the title shall be confirmed to the parties, where not less than fifty acres has been agreed upon to be given to the settler, clear of expense, together with the articles so furnished.
64 P.S. § 166