Erdinoi
The Erdinoi were a people of Ireland in the Iron Age. Like almost every people of this period, they are known essentially through outside observers, and what survives is little more than a name and an approximate location. The name is attested as Erdinoi and Erpeditanoi probable [pleiades] .
We do not draw a territory for the Erdinoi. Their borders are unknown and contested; the point above marks only an approximate location, not an extent — and there is no line of descent from this people to the later clans or to anyone today. A fuller overview is available on Wikipedia.
Other peoples of Ireland
Auteinoi · Brigantes · Darinoi · Eblanoi · Ganganoi · Iouernoi · Kaukoi · Koriondoi · ‘Magnatai’ · Manapioi · Ouenniknioi · ‘Ouolountioi’/[Uluti] · Robogdioi
Sources
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[ptolemyGeographia]Ptolemy, Geographia, Book II (c. AD 150) — the Greek geographer’s list of the poleis and peoples of Britain and Ireland. Public domain (ancient text) -
[pleiades]Pleiades: a gazetteer of past places (pleiades.stoa.org). CC BY 3.0 (attribution required) · link - Location & name forms from Pleiades (CC BY 3.0; © Pleiades contributors).