Which peoples lived in Bohemia before the Slavic Czechs became established there?

Before the Slavic Czechs became established in the region by the 5th or 6th century CE, the territory of Bohemia was inhabited by two primary groups:

• Celtic peoples: The region was first settled by Celtic tribes, most notably the Boii. The name "Bohemia" is derived from this group, who left distinct archaeological marks of a long stay in the area.12
• Germanic tribes: The Celtic population was subsequently supplanted by Germanic tribes. Among the most prominent were the Marcomanni, who migrated into Bohemia around 9 BCE to escape Roman aggression and established a powerful confederation of tribes under their king, Maroboduus.32

Historical evidence suggests that these population shifts were not always abrupt; it is likely that Slavic groups began entering the territory while Germanic tribes were still present, before the Slavs eventually became the dominant population in the 6th century.2