Clement A. Nachbar of Mankato, Minn., donated this site in honor of the memory of his parents, Mathias Nachbar and Wilhelmina Mertens Nachbar, who with their pioneer parents settled in the vicinity of Jordan in Minnesota Territory in 1855. The site was dedicated to the early pioneers and was to be used exclusively for historical and memorial purposes and for the enjoyment of the citizens of Jordan for all time. 1937.