Erdini
Eth. Erdini in Ireland, mentioned by Ptolemy as occupants of the western side of Ireland next to the Venniani (Donegal), and north of the Nagnat (Connaught) == the parts about Loch Erne == Fermanagh.
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.