John Crombie Cochrane (1835–1887) was a prominent architect in the 19th century practicing in Chicago, Illinois. He formed Cochrane and Garnsey with George O. Garnsey. He began work in Davenport, Iowa in 1856, moving to St. Louis in 1858 after the Panic of 1857. With the onset of the Civil War, we returned to his boyhood home in New Hampshire. In 1864, he moved to Chicago and began working as an architect, with his design being selected for the Illinois State Capitol in 1868.
He designed numerous buildings, including:
Iowa State Capitol, Grand Ave. and E. 12th St., Des Moines, IA (Cochrane,J.), listed on the National Register of Historic Places (NRHP)Illinois State Capitol, Capitol Avenue and Second Street, Springfield, IL NRHP-listedCook County Hospital, 1835 West Harrison St., Chicago, IL NRHP-listedLambrite-Iles-Petersen House, 510 W. 6th St., Davenport, IA, one of the earliest examples of Italianate architecture in the state of Iowa and a contributing property in the Hamburg Historic District.Livingston County Courthouse, 112 W. Madison, Pontiac, IL (Cochrane,J.C.) NRHP-listedMarshall County Courthouse, Courthouse Sq., Marshalltown, IA (Cochrane,J.C.) NRHP-listedIvory Quinby House, 605 N. 6th St., Monmouth, IL (Cochrane,J.C.) NRHP-listedOne or more buildings in Marshalltown Downtown Historic District, Roughly bounded by 2nd St., State St., 3rd. Ave., and E. Church St., Marshalltown, IA (Cochrane, John C.) NRHP-listedOne or more buildings in St. Katherine's Historic District, 901 Tremont St., Davenport, IA (Cochrane,John C.) NRHP-listedThe former Scott County Courthouse, Davenport, IA, completed by architect John W. Ross after Cochrane's deathRiverside Presbyterian Church, Riverside, IllinoisPrivate residence at 140 Herrick Road in Riverside, Illinois
