Usbium
Οὔσβιον
Usbium (Οὔσβιον), a town mentioned by Ptolemy (2.11.30) in the south-east of Germania, probably in the territory of the Marcomanni, seems to be identical with the modern Ispern, on a rivulet of the same name.
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.