1. Ohio's First Death Penalty Execution - On October 10th, 1815, Ohio's first death penalty execution was carried out when two convicted murderers were hanged in Franklin County.

2. The Battle of Lake Erie - On October 10th, 1813, the pivotal Battle of Lake Erie occurred during the War of 1812. Ohioan Oliver Hazard Perry commanded the American naval forces, defeating the British and securing control of Lake Erie.

3. Ohio Statehood - On October 10th, 1803, Ohio officially became the 17th state to join the Union, marking a significant milestone in the state's history.

4. The Ohio State University - On October 10th, 1870, the Ohio Agricultural and Mechanical College, now known as The Ohio State University, held its first classes in Columbus, Ohio.

5. John D. Rockefeller born in Ohio - On October 10th, 1839, John D. Rockefeller was born in Richford, New York, but grew up in Cleveland, Ohio. He would go on to become one of the wealthiest and most philanthropic Americans in history, amassing a fortune in the oil industry and donating millions to various causes.