 The first town laid out in the county was North Liberty, established by Lucas Sullivant in 1797, but the first settlement in the county was made in present-day Jerome township by Joshua and James Ewing in 1798.An important settlement made in the county would be by Abraham Amrine, of Swiss descent and a revolutionary soldier, in 1817, two miles (3 km) northwest of Marysville.As part of negotiations with Virginia, who had claimed land in Ohio, to sign the Articles of Confederation, the United States granted them claims to land in Ohio which would be known as the Virginia Military District.