This Greek Revival home, built by Amos Locke in 1837, is thought to be the oldest frame building in St. Charles. The house remains in good condition with several historical landmarks still evident. The man for whom the home is named, Eugene A. Brownell, came to St. Charles in 1850. Brownell served in the 13th Regiment, H company, of the Illinois Volunteers during the Civil War. After the war, he became a business partner with Charles A. Miller in paper manufacturing. Beginning in 1880 he served as postmaster.