John Wagoner, Peoria, Illinois, and Henry O. Wagoner, Chicago, and elsewhere

I am seeking information on John Wagoner, younger brother of Henry Oscar Wagoner.Both were mulattos, born in Hagerstown, MD.John ca. 1822; H.O ca. 1816.John was living in Peoria in 1870 and 1880.H. O. Wagoner lived in Hagerstown, MD, Galena, IL, Canada West, Chicago, and Denver, CO.H. O. was active in the Underground Railroad, was a friend of the abolitionist John Brown, and Fredrick Douglass, among many other leading figures in the nineteenth century.He also was a personal friend of General and President Ulysses S. Grant and Senator Elihu Washburne.Any information, documents, or pictures of the Wagoner brothers will be greatly appreciated.