Riusiava
Ῥιουσιαύα
Riusiava (Ῥιουσιαύα), a town in the Agri Decumates, in Germany (Ptol. 2.11.30), is commonly believed to have been situated in the Riesgau, or Ries, which may possibly derive its name from it.
From William Smith (ed.), Dictionary of Greek and Roman Geography. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.