Rubuta ci gaba don wannan sakin layi - Har zuwa Yaƙin Napoleonic, Blankenhain ya kasance wani ɓangare na Duchy na Saxe-Weimar. Bayan Ƙungiya ta Hudu
Bayan nasarar Napoleon a Jena da Auerstedt, Napoleon ya haɗa da Ubangijin Blankenhain zuwa Yariman Erfurt, kai tsaye a ƙarƙashin kansa a matsayin "masarautar masarautar masarauta" (), daban da Tarayyar Rhine (a zahiri mai kare Faransa da aka kafa don maye gurbin Masarautar Roman Roman da ba ta wanzu ba), wanda jihohin Thuringian da ke kewaye da su suka shiga.