by writing only, with or without seal, shall for ever hereafter be accounted good, and available in law, to bar the heirs or executors of such vendors, donors or grantors; and all persons claiming dower from any such vendors, donors or grantors; any error in the form only, of such writings, to the contrary notwithstanding.

    III. And forasmuch as divers assignments of patents (written on the back side of such patents) for land, are now worn out, and also many other sales in paper, either worn out, or quite lost, for which the purchase money hath been bona fide paid, Be it further enacted by the authority, advice and consent aforesaid, That all sales, gifts or grants heretofore made, by persons that right had, as aforesaid, where either the sale, gift or grant, or payment, bona fide made, can be proved by witness, such sales shall for ever hereafter be accounted good, and available in the law, to bar the heirs and executors of such vendors, donors or grantors, or other persons claiming dower from any such vendors, donors or grantors; any law, custom or usage to the contrary hereof notwithstanding.