Germanic Marcomannic

The Marcomanni were a Germanic tribal confederation who eventually came to live in a powerful kingdom north of the Danube, somewhere in the region near modern Bohemia, during the peak of power of the nearby Roman Empire. According to Tacitus and Strabo they were Suebian.

It is believed their name derives possibly from the Proto-Germanic forms of "march" ("frontier, border") and "men", *Markōmanniz, which would have been rendered in Latin form as Marcomanni.

The Marcomanni first appear in historical records as confederates of the Suebi of Ariovistus fighting against Julius Caesar in Gaul (modern France), having crossed the Rhine from present-day southern Germany. The exact position of their lands at this time is not known. The fact that their name existed before the Romans had territory near the Danube or Rhine raises the question of which border they lived near in order to explain their name. Their name may echo an earlier demarcation between the northern Germanic tribes of the Jastorf cultural circle, and those of the Celtic maximum expansion during the earlier and later Iron Age of La Tene dominance throughout Europe, that from findings in the archaeological record pressed North through with some influence as far as into Jutland, but mostly remained separated South and settled on Oppidas over today Thuringia and Saxony along the Hercynian forest, intrinsically connected to the major trade roads that went into the more evolved centers of Bohemia, Moravia and Silesia all still Celtic regions then. It has as been suggested that they may have lived near the conjunction of Rhine and Main river, at the areas formerly inhabited but left deserted by the Helvetii and Taurisci. However the historian Florus reports that Drusus erected a mound of their spoils during his campaign of 12-9 BC, after defeating the Tencteri and Chatti, and before next turning to Cherusci, Suevi, and Sicambri, suggesting that they were not close to any obvious border at the time.

...
Wikipedia