Ka cika wannan magana: Da faɗuwar Daular Roma, Alsace ta zama yankin mutanen Jamus Alemanni. Alemanni mutane ne masu noma, kuma yaren Jamusanc nasu ya zama tushen yarukan zamani da ake magana a gefen Upper Rhine (Alsatian, Alemannian, Swabian, Swiss). Clovis da Franks sun kayar da Alemanni a lokacin karni na 5 AD, wanda ya ƙare da
Yaƙin Tolbiac, kuma Alsace ya zama wani ɓangare na Masarautar Austrasia. A ƙarƙashin magajin Clovis na Merovingian an mai da mazaunan Kiristoci. Alsace ya kasance a ƙarƙashin ikon Frankish har sai daular Frankish, bayan rantsuwar Strasbourg na 842, an rushe shi a hukumance a 843 a Yarjejeniyar Verdun; jikokin Charlemagne sun raba daular zuwa sassa uku. Alsace ya kasance wani ɓangare na Middle Francia, wanda babban jikansa Lothar I ya mallake shi. Lothar ya mutu a farkon 855 kuma an raba masarautarsa zuwa sassa uku. An ba ɗan Lothar yankin da ake kira Lotharingia, ko kuma Lorraine. Sauran ya raba tsakanin 'yan'uwan Lothar Charles the Bald (mai mulkin yankin Frankish na Yamma) da Louis the German (mai mulkin yankin Frankish na Gabas). Masarautar Lotharingia ba ta daɗe ba, duk da haka, ta zama babban duke na Lorraine a Gabashin Francia bayan Yarjejeniyar Ribemont a 880. An haɗa Alsace tare da sauran Alemanni a gabashin Rhine a cikin ginshiƙin duchy na Swabia.