Census-Online.com - census transcriptions for  Franklin Co.
Franklin County Historical Societies
Franklin Co Early Settlers
Franklin County, OH Genealogy Forum read and post messages about your ancestors for this county
Franklin Co. Surname Index
Franklin County, OH Genweb Project a collection of online resources for genealogy researchers
Interment.net - cemeteries for Franklin County
The Tombstone Transcription Project - cemeteries for Franklin Co. OH
US GenWeb Archives for Franklin County cemeteries, newspapers, wills, military rosters etc recorded online

Additional Resources

Ohio Obituary Search enter your ancestor's name to search the world's largest newspaper obituary archive; over 3 Billion newspaper articles
Ohio Birth Records
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Ohio Divorce Records
Ohio Death Records