Alamanni & Bavarians

https://en.m.wikipedia.org/wiki/Brunswick-Bevern

https://en.m.wikipedia.org/wiki/House_of_Welf

https://en.m.wikipedia.org/wiki/Elder_House_of_Welf

https://en.m.wikipedia.org/wiki/Ferdinand_Albert_I,_Duke_of_Brunswick-Wolfenbüttel-Bevern

The Elder House of Welf, known as Rudolphins in Burgundy, was a Frankish noble dynasty of European rulers documented since the 9th century. Closely related to the Carolingian dynasty, it consisted of a Burgundian and a Swabian group.

https://en.m.wikipedia.org/wiki/Duchy_of_Swabia

https://en.m.wikipedia.org/wiki/Alemanni

In 496, the Alemanni were conquered by Frankish leader Clovis and incorporated into his dominions.

After an uprising by Theudebald, Duke of Alamannia, though, Carloman executed the Alamannic nobility and installed Frankish dukes.

https://en.m.wikipedia.org/wiki/Carloman_I