Brown County, Wisconsin: History
Brown County is one of Wisconsin's two original counties, along with Crawford County. It originally spanned the entire eastern half of the state when formed by the Michigan Territorial legislature in 1818. It was named for Major General Jacob Brown, a military leader during the War of 1812.
Several towns along the Fox River vied for the position of county seat in Brown County's early years. The first county seat was located at Menomoneeville (now a part of Allouez) in 1824. In 1837, a public referendum relocated the county seat to De Pere. The location was put up for the popular vote again in 1854, resulting in the establishment of the present county seat at Green Bay.
The oldest known tree in Wisconsin, a 1,300-year-old cedar growing on the Niagara Escarpment, was found in Brown County.