91st Regiment, Illinois Infantry

Brief History
The 91st Regiment, Illinois Infantry was organized at Camp Butler, Illinois, and mustered in September 8, 1862. It Mustered out July 12 and discharged at Chicago, Illinois, July 28, 1865.

For more information on the history of the 91st Regiment, Illinois Infantry, see the following:


 * Wikipedia, (accessed 6 January 2011) article on the 91st Illinois Volunteer Infantry Regiment.


 * Civil War Archive. (accessed 6 Jan 2011) Brief history of the 91st Regiment Infantry.

Companies in this Regiment with County 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.

The following counties of origin are taken from the Adjutant General's Report, found on the Illinois Civil War Rosters web site. Roster pages are from the same report found on the Internet Archives web site. The rosters show the men who served in each regiment, their residences, dates of enlistment and mustering out, and other remarks.

Company A - many men from Montgomery County - Montgomery County web site - Roster, vol. 5, pages 313-314.

Company B - many men from Henderson County - Henderson County web site - Roster, vol. 5, pages 315-316.

Company C - many men from Henderson County - Henderson County web site - Roster, vol. 5, pages 316-318.

Company D - many men from Grundy County - Grundy County web site - Roster, vol. 5, pages 318-319.

Company E - many men from Kendall County - Kendall County web site - Roster, vol. 5, pages 320-321.

Company F - many men from Lawrence County - Lawrence County web site - Roster, vol. 5, pages 321-323.

Company G - many men from Greene and Scott counties - Greene and Scott county web sites - Roster, vol. 5, pages 323-325.

Company H - many men from Greene County - Greene County web site - Roster, vol. 5, pages 325-327.

Company I - many men from Carroll and Greene counties - Carroll and Greene county web sites - Roster, vol. 5, pages 327-329.

Company K - many men from Greene County - Greene County web site - Roster, vol. 5, pages 329-331.

Unassigned Recruits - Roster, vol. 5, page 331.

The Civil War Soldiers and Sailors database lists 1,440 men on its roster for this unit. Roster.

Other Sources
WEBSITES


 * 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 ‘Illinois 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.


 * Illinois in the Civil War describes many Confederate and Union sources, specifically for Illinois, 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.


 * Illinois Civil War Rosters from the Adjutant General's Report, 91st Regiment  (accessed 22 Feb. 2011) includes rosters of all the regiments and information on the different companies in each regiment.


 * Illinois State Archives - Illinois Civil War Muster and Descriptive Rolls Database (accessed 14 June 2011). Search by residence, unit, regiment, company or soldier.

BOOKS AND FILMS


 * Civil War Centennial Commission of Illinois. Illinois Military Units in the Civil War. (Springfield, [Ill.]:Civil War Centennial Commission of Illinois, c1962).. FHL US/CAN Book 977.3 M2im and FHL US/CAN Film 6334558. Other libraries with this book. Includes military units by county, infantry, cavalry, and artillery regiments, including independent artillery.


 * United States. War Department. Record and Pension Office. Compiled Records Showing Service of Military Units in Volunteer Union Organizations. (Washington, District of Columbia : The National Archives, c1964). 91st-97th Infantry FHL US/CAN Film 1488480. Other libraries with this microfilm. View online at Internet Archives.


 * Vance, Joseph W and Illinois. Adjutant General's Office. Report of the Adjutant General of the State of Illinois, 1861-1866. (Salt Lake City, Utah : Filmed by the Genealogical Society of Utah, 1957, 1980). FHL US/CAN Film 1670785. Other libraries with this book. View online atInternet Archives. Rosters of officers, enlisted men, and historical memorandum of the regiments.


 * Beverly, James M. A History of the Ninety-first Regiment, Illinois Volunteer Infantry, 1862-1865. (Washington, District of Columbia : Library of Congress, Photo-duplication Service, c1987). FHL US/CAN Film 1550194. Other libraries with this book.