In 1824, with the establishment of Seneca County by the Ohio Legislature, Tiffin was designated as the county seat. The county was named after the Seneca people, the westernmost of the Iroquois League of Six Nations who dominated the territory for centuries.
In 1824, with the establishment of Seneca County by the Ohio Legislature, Tiffin was designated as the county seat. The county was named after the Seneca people the westernmost of the Iroquois League of Six Nations who dominated the territory for centuries.