My Scottish blood tells me to use the free "stuff" too. But, first you need to learn the name of the county where Geneva is located. There are three towns in Ohio named Geneva -- counties Hardin, Fairfield and Ashtabula.
Once you know the county you can obtain a copy of the marriage "application" for your parents. When you get married you fill out an application for a license, the person who marries you fills out the license and it is recorded at the county, then the county gives a certificate to the bride and groom.
It's that "application" that has all the personal information on the bride and groom - residence, occupations, age, where born, names of parents etc. That will give you name of the "first" Harry L.'s wife.
You need to find enough information that will get you back into the census records. Most recent available for public viewing is the 1930.
SSDI (Soc Sec Dth Idx)
Spore, William L., b 17 Apr 1931; d 7 Jul 1996; last residence Chardon, Geauga Co, OH; SS card issued in Oregon.
You figure 20 to 25 years between generations, so he fits the possible year of birth.
Maybe this is his father:
Spore, Harry L., b 24 Mar 1890; d 15 Sep 1969; last residence Stow, Summit Co, OH; SS card issued in Ohio.
Now, this Harry I found on the 1920 census in Toledo, Lucas Co, OH, with a wife a young child.
Is there a Family History Center near you? Or, is there a genealogical society in your area? Often these places offer classes on getting started in researching family trees.
About 14 of the larger FHCs across the country have free access to Ancestry. You can go in use it for free and volunteers will help you.