Altenbüren was part of the Grand Duchy of Hessen-Darmstadt. Today, it is located in the German State of Nordrhein-Westfalen. Names Altenbüren, Kr. Hochsauerland, Nordrhein-Westfalen Surnames Mühl (Warenburg) Simon (Warenburg) 51.385833, 8.505 Volga Colonies Warenburg Warenburg Immigration Locations Dovsunskaya, Stavropol Krai (North Caucasus) Fresno Metropolitan Area, California Visalia, Tulare Co., California Bakersfield Metropolitan Area, California