Brown County, Illinois, USA Township Map Communities & Community Map Illinois & the Civil War Named for Jacob Brown Jacob Brown was a Brigadier General of NY volunteers during the early years of the War of 1812. By 1815, he was Commander-in-chief of the Army. He received a gold medal for his action at Chippewa, Erie, and Niagra. Established in 1839 Formed from Schuyler County, Illinois on 1 Feb ...