Marobodus

Maroboduus (born c. in 30 BC, died in AD 37), whose German name was Marbod, was a Romanized king of the Germanic Suebi, who under pressure from the wars of the Cherusci and Romans, and losing the Suevic Semnones and Langobardi from his kingdom, moved with the Marcomanni into the forests of Bohemia, near to the Quadi.

The name "Maroboduus" can be broken down into two Celtic elements, māro- meaning "great" (cf. Welsh mawr, Irish mór), and bodwos meaning "raven" (cf. Irish badhbh). As there was extensive mingling of Germanic tribes and Celts in this period, a Germanic or mixed Germanic-Celtic tribe led by a man with a Celtic name would be nothing unusual.

Maroboduus was born into a noble family of the Marcomanni. As a young man he lived in Italy and enjoyed the favour of the Emperor Augustus. The Marcomanni had been beaten utterly by the Romans in 10 BC. About 9 BC Maroboduus returned to Germania and became ruler of his people. To deal with the threat of Roman expansion into the Rhine-Danube basin he led the Marcomanni to the area later known as Bohemia to be outside the range of the Roman influence. There he took the title of a king and organized a confederation of several neighboring Germanic tribes. He was the first documented ruler of Bohemia.

Augustus planned in 6 AD to destroy the kingdom of Maroboduus, which he considered to be too dangerous for the Romans. The future emperor Tiberius commanded twelve legions to attack the Marcomanni. But the outbreak of a revolt in Illyria, and the need for troops there, forced Tiberius to conclude a treaty with Maroboduus and to recognize him as king.

...
Wikipedia