7th Regiment, Ohio Infantry (3 months, 1861)
The 7th Regiment, Ohio Infantry (3 months, 1861) mustered in April 22-25, 1861 at Cleveland, Ohio. They were mustered out July 24, 1861 at Camp Dennison, Ohio. 
Companies in this Regiment with the Counties of Origin
Men often enlisted in a company recruited in the counties where they lived though not always. After many battles, companies might be combined because so many men were killed or wounded. However if you are unsure which company your ancestor was in, try the company recruited in his county first.
Companies by County:
Three Months Service:
Company B - Also known as "Sprague Zouave Cadets".
Company D - Also known as "Painesville Union Guards".
Company E - Also known as "Sprague Guards".
Company F - Also known as "Franklin Rifles".
Company H - Also known as "Warren Infantry".
Company I - Also known as "Mahoning Guards".
Company K - Also known as "National Guards".
Three Months Service listing from Synonyms of Organizations in the Volunteer Service of the United States During the Years 1861, '62, '63, '64, '65. By John T. Fallon. Adjutant General's Office. Washington. D.C. 1885, as given on Larry Stevens' web page, 7th Ohio Infantry. (accessed on March 21,2011)
- Beginning United States Civil War Research gives steps for finding information about a Civil War soldier. It covers the major records that should be used. Additional records are described in ‘Ohio in the Civil War’ and ‘United States Civil War, 1861 to 1865’ (see below).
- National Park Service, The Civil War Soldiers and Sailors System, is searchable by soldier's name and state. It contains basic facts about soldiers on both sides of the Civil War, a list of regiments, descriptions of significant battles, sources of the information, and suggestions for where to find additional information.
- Ohio in the Civil War describes many Confederate and Union sources, specifically for Ohio, and how to find them.. These include compiled service records, pension records, rosters, cemetery records, Internet databases, published books, etc.
- United States Civil War, 1861 to 1865 describes and explains United States and Confederate States records, rather than state records, and how to find them. These include veterans’ censuses, compiled service records, pension records, rosters, cemetery records, Internet databases, published books, etc.
- National Park Service, The Civil War Soldiers and Sailors System, (accessed 6 December 2010.