Theudebald, Duke of Alamannia in the context of "Charles Martel"

The Alemanni or Alamanni were a confederation of Germanic tribes on the Upper Rhine River during the first millennium. First mentioned by Cassius Dio in the context of the campaign of Roman emperor Caracalla of 213 CE, the Alemanni captured the Agri Decumates in 260, and later expanded into present-day Alsace and northern Switzerland, leading to the establishment of the Old High German language in those regions, which by the eighth century were collectively referred to as Alamannia.

In 496, the Alemanni were conquered by the Frankish leader Clovis and incorporated into his dominions. Mentioned as still pagan allies of the Christian Franks, the Alemanni were gradually Christianized during the seventh century. The Lex Alamannorum is a record of their customary law during this period. Until the eighth century, Frankish suzerainty over Alemannia was mostly nominal. After an uprising by Theudebald, Duke of Alamannia, however, Carloman executed the Alamannic nobility and installed Frankish dukes.

The Alemanni or Alamanni were a confederation of Germanic tribes on the Upper Rhine River during the 1st millennium. They are first mentioned by Cassius Dio in the context of the campaign of Roman emperor Caracalla of 213 AD, the Alemanni captured the Agri Decumates in 260 AD, and later expanded into present-day Alsace and northern Switzerland, leading to the establishment of the Old High German language in those regions, which by the 8th century were collectively referred to as Alamannia.

In 496 AD, the Alemanni were conquered by the Frankish leader Clovis and incorporated into his dominions. Mentioned as still pagan allies of the Christian Franks, the Alemanni were gradually Christianized during the 7th century. The Lex Alamannorum is a record of their customary law during this period. Until the 8th century, Frankish suzerainty over Alemannia was mostly nominal. However, after an uprising by Theudebald, the Duke of Alamannia, Carloman executed the Alamannic nobility and installed Frankish dukes.