Ausoba
Ausoba in Ireland, placed by Ptolemy (2.2.4) as the third river from the Boreum promontorium [BOREUM], and as due north of the Sena. As it is more certain that the Sena is the Shannon than that the northern promontory is Malin Head, the outlet of Loch Corrib in Galway Bay best suits the somewhat equivocal condition of the river Ausoba.
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.