A map in the book, "Indiana to 1816," by Barnhart and Riker, shows this strip or "gore" of land (plus parts of Ohio and Switzerland Counties) was not part of the treaties with the Indians that Governor Harrison effected from 1803-1809. Most of northern Indiana was acquired later, but I suspect this land was sold as part of Ohio. The Dearborn County Historical Society says the county seat of Lawrenceburg was within the Hamilton Co Ohio boundaries very early. Looks as if that changed somewhere around Indiana statehood. Researching early land sales within Hamilton County OH is a daunting task. Sharon Mills