Dabrona
Dabrona a river in Ireland, mentioned by Ptolemy as being the first river after the Southern Promontory (Cape Clear)--probably the Blackwater, in respect to name as well as locality; since dubh==black.
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.