Brief history Ada, OH, from https://en.wikipedia.org/wiki/Ada,_Ohio
"Ada is a village in Hardin County, Ohio, United States, located about 69 miles (111 km) southwest of Toledo. The population was 5,334 at the 2020 census. It is the home of Ohio Northern University and Ada High School.
History
Following the 1817 Treaty of Fort Meigs, the Shawnee Indians held reservation land at Hog Creek near Ada. Ada itself was originally called Johnstown, platted in 1853 by S. M. Johnson when the railroad was extended to that point. When a post office was established it was called Ada Post Office, named after the postmaster's daughter, Ada. The post office has been in operation since 1854.The growth of the village is due in large part to the founding of the Ohio Normal School, now known as Ohio Northern University. The University was founded in 1871 by Henry Solomon Lehr, just eighteen years after Ada was first settled. Today, Ada is the second largest incorporated community in Hardin County. In 1910, President William Howard Taft visited Ada, to give the fall commencement speech at Ohio Northern University. To date, Taft is the only president to visit the village. Ada welcomed Martin Luther King Jr. to the village in January of 1968, just three months before his assassination. Ada has been noted for having one of the shortest place names in Ohio. The National Arbor Day Foundation has qualified Ada as a Tree City USA since 1981."
