The Civil War touched nearly every Ohio family, and it left behind some of the most detailed records a genealogist can find. If a soldier stands in your tree, the war years may be where the paper trail suddenly opens up.
The people in this story fill our public-record database. Search a surname and filter to Ohio.
Search Ohio records →Ohio in the Civil War
Ohio contributed some 320,000 men — one of the largest contributions of any state to the Civil War. Ohio gave the Union three of its greatest commanders — Grant, Sherman, and Sheridan — and Morgan’s Raid reached into the state’s southern counties in 1863.
The regiments and the record
Each regiment kept muster rolls, and after the war the state published its rolls of service — for Ohio, the Official Roster of the Soldiers of the State of Ohio. These are among the richest genealogical records of the nineteenth century, naming a soldier’s age, town, unit, and fate.
Pensions and the aftermath
Union veterans and their widows could apply for federal pensions, generating detailed files now at the National Archives, and many joined the Grand Army of the Republic. A veteran’s grave, pension file, and roster entry together can reconstruct his entire war.
Finding your Ohio ancestors
- State service rosters and federal pension files name a Civil War soldier’s age, town, unit, and fate — often cracking a line wide open.
- Census records (free through 1950) list occupation and residence — placing your family in a specific Ohio county and town, decade by decade.
- Death & cemetery records — search our Ohio database for the people in this story and the generations around them.
- The Ohio History Connection in Columbus holds the deeper collections — company, church, military, and county records.
- Newspapers on the Library of Congress’s Chronicling America carried the obituaries, accidents, and milestones of these communities.
We work back from you to the ancestor who lived this history — census, vital, church, and cemetery records, written into a book and an interactive family site. Flat rate, no DNA test.
See how it works →Frequently asked questions
How many soldiers did Ohio send to the Civil War?
Ohio contributed some 320,000 men — one of the largest contributions of any state.
How do I find a Ohio Civil War ancestor?
Start with the Official Roster of the Soldiers of the State of Ohio, then order the federal pension file from the National Archives and check the veteran’s grave and Grand Army of the Republic records.