Limnus
Limnus an island off the coast of Ireland, mentioned by Ptolemy (2.2), as lying to the east of Ireland, and being uninhabited. Pliny also mentions it (4.30). It is probably Lambay Island. However, the Monumenta Britannica not only suggests for Limnos (Ptolemy's Limnus) the modern names of Lamabay, Lymen, and Ramsey, but they also distinguish it from Limnus (Pliny's Limnos) which they make Dalkey.
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.