Franks - AbsoluteAstronomy.com

The Franks were a confederation of Germanic tribes first attested in the third century AD as living north and east of the Lower Rhine

Lower Rhine

The Lower Rhine flows from Bonn, Germany, to the North Sea at Hoek van Holland, Netherlands.Almost immediately after entering the Netherlands, the Rhine splits into many branches. The main branch is called the Waal which flows from Nijmegen to meet the river Meuse; after which it is called Merwede...

River. From the third to fifth centuries some Franks raided Roman

Roman Empire

The Roman Empire was the post-Republican period of the ancient Roman civilization, characterised by an autocratic form of government and large territorial holdings in Europe and around the Mediterranean....

territory while other Franks joined the Roman troops in Gaul

Gaul

Gaul was a region of Western Europe during the Iron Age and Roman era, encompassing present day France, Luxembourg and Belgium, most of Switzerland, the western part of Northern Italy, as well as the parts of the Netherlands and Germany on the left bank of the Rhine. The Gauls were the speakers of...

. Only the Salian Franks

Salian Franks

The Salian Franks or Salii were a subgroup of the early Franks who originally had been living north of the limes in the area above the Rhine. The Merovingian kings responsible for the conquest of Gaul were Salians. From the 3rd century on, the Salian Franks appear in the historical records as...

formed a kingdom on Roman-held soil that was acknowledged by the Romans after 357. In the climate of the collapse of imperial authority in the West, the Frankish tribes were united under the Merovingians and conquered all of Gaul except Septimania

Septimania

Septimania was the western region of the Roman province of Gallia Narbonensis that passed under the control of the Visigoths in 462, when Septimania was ceded to their king, Theodoric II. Under the Visigoths it was known as simply Gallia or Narbonensis. It corresponded roughly with the modern...

in the 6th century.