What is "veleti"

The Veleti (; ) or Wilzi(ans) (also Wiltzes; German: Wilzen) were a group of medieval Lechites tribes within the territory of modern northeastern Germany; see Polabian Slavs. In common with other Slavic groups between the Elbe and Oder Rivers, they were often described by Germanic sources as Wends. In the late 10th century, they were continued by the Lutici. In Einhard's Vita Karoli Magni, the Wilzi are said to refer to themselves as Welatabians.