The Couillardville area covers approximately one and one half miles along the Lower Oconto River Valley and contains archeological sites ranging from Paleo-Indian occupations through Historic Indian occupations. South of this site on the north side of the river were three conical burial mounds that were ultimately destroyed by agricultural plowing, and Indian village sites pre-dating European contact have been found along the river. In 1851 Jacob Couillard and his wife Susan traveled up the Oconto River and established a store and a community that was ultimately named after them. The settlement grew to include a school attended by children of settlers and Indians, a church, a store, and a cheese factory, and the park is the site of the parsonage associated with the Presbyterian Church.