Lahngau : along the west bank of the lower Main in southern Hesse (Darmstadt region) and Lower Franconia, between the lower Gersprenz and the lower Mümling, around Großostheim; sub-gau of Maingau or Einrichgau: along the Aar on the right bank of the Middle Rhine in northeastern Rhineland-Palatinate and southwestern Hesse, bounded by the western Taunus mountains in the south and the lower Lahn in the north, around Heidenrod; some sources list Einrich as a sub-gau of Lahngau and show its territory extending east to the Weil : along the Wied on the right bank of the Middle Rhine in northeastern Rhineland-Palatinate, around Montabaur in the western Westerwald; some sources list Engersgau as a sub-gau of Lahngau : along the lower Enz and the upper Kraichbach in northern Baden-Württemberg (Karlsruhe region), around Mühlacker; sub-gau and southeastern half of Kraichgau Erdagau: along the Aar in Hesse (Giessen region), between the Dill and the Salzböde; sub-gau of Lahngau (split between Niederlahngau and Oberlahngau) : along the Glems in northern Baden-Württemberg (Stuttgart region), around Schwieberdingen Haigergau: between the Nister in northeastern Rhineland-Palatinate and the Dietzhölze in Hesse (Giessen region), bounded by the upper Sieg in the north and the Westerwald in the south, around Haiger; sub-gau of Niederlahngau (Frankish) Hessengau or Hassia: along the lower Eder and lower Fulda in Hesse (Kassel region), around Fritzlar and Kassel; some sources show Hessengau extending further west along the Eder to include much of Oberlahngau : along the lower Kinzig in Hesse (Darmstadt region), around Gelnhausen; sub-gau of Maingau Königssondergau or the Königs besonderer Gau ('King's special Gau'): along the right bank of the Middle Rhine in Hesse (Darmstadt region), around Wiesbaden; sub-gau of Rheingau Kraichgau: along the Kraichbach in northern Baden-Württemberg (Karlsruhe region and Rhine-Neckar), between the Upper Rhine and Enz, around Mühlacker and Bruchsal Niederlahngau or Unterlahngau: along the lower Lahn in western Hesse (Giessen region), around Limburg; some sources do not divide Lahngau into Nieder- and Ober-, and include Engersgau and Einrich as sub-gaue Oberlahngau: along the upper Lahn in northwestern Hesse (Kassel region), around Marburg; some sources do not divide Lahngau into Nieder- and Ober-, and instead have Hessengau extend further west into what would be Oberlahngau : along the lower Neckar at the confluence with the Upper Rhine in northern Baden-Württemberg (Rhine-Neckar), roughly coterminous with the western half of Rhein-Neckar-Kreis plus Mannheim and Heidelberg : along the lower Main in southeastern Hesse