140 Eblana Civitas

Eblana is the name of an ancient Irish settlement which appears in the Geographia of Claudius Ptolemaeus (Ptolemy), the Greek astronomer and cartographer, around the year 140 AD. It was traditionally believed by scholars to refer to the same site as the modern city of Dublin. There is no definitive proof to tie Eblana with any location, however, so its exact identity is still a matter of speculation. Early Irish antiquarians believed that the name Eblana in Ptolemy's Geographia was in fact a corruption of Deblana, itself a version of the Gaelic name Dubh Linn (Black Pool), from which the modern English language name Dublin derives. This seems not to be the only instance where Ptolemy truncated the initial letters of place names. For example, instead of Pepiacum, and Pepidii (in Wales), Ptolemy writes Epiacum and Epidii; and for Dulcinium (now Ulcinj, in Montenegro), he has Ulcinium.