Duchy of Franconia
Kuppenheim itself was first mentioned in documents around 1095. At that time it was the most important place in the Ufgau, a historical county of the Duchy of Franconia between the southern Ortenau and the northern Kraichgau. In addition, the Murg River represents the former border between the Alemannic and the southern Franconian language area. As a result, the old Kuppenheim dialect, which arose out of the Lower Alemannic dialects, includes South Rhine-Franconian language features.