Illinois Civil War Muster and Descriptive Rolls Database:

www.ancestery.com - American Civil War Soldiers:
      John McClenahan - Capt - Co B - 15th Infantry Regiment Ohio
      Enlisted, 10Sep1861; Age, 31
      Transferred on 11Aug1862 to Co S
      Promoted to Full Major on 11Aug1862
      Wounded 31Dec1862 at Stones River, TN
      Promoted to Full Lieutenant Colonel, 22Jul1864
      Mustered out, 21Nov1865
  www.civilwar.nps.gov - Detailed Soldier Record:
      John McClenahan - Co F & S - 15 Ohio Infantry
      Soldier's rank in - Capt.; Soldier's rank out - Lt. Col.
     Alternate name - John McClenehan
     Film Number 553, Roll 69
www.suvcwdb.ort - Sons of Union Veterans of the Civil War: Grave Registration:

       McClenahan, John - 15 Ohio Infantry
        Died, 15Apr1911; Buried, Elmhurst (Joliet) Will County, Illinois

Headstone Readings,  Elmhurst Cemetery, Joliet, Illinois - Fairlawn Section:

                Large  "McClenahan"   marker

JOHN Col. 15th Ohio Vol. Inf. 1832-1911

Frances Ricksecker 1846-1924

                               Adjacent separate Stones:        

Mable Ann McClenahan 1878-1960

Ethel McClenahan Hoagland 1878-1922