The Erdini (Έρδινοι) or Erpeditani (Έρπεδιτανοι) were a people referred to in

Ptolemy Claudius Ptolemy (; , ; ; – 160s/170s AD) was a Greco-Roman mathematician, astronomer, astrologer, geographer, and music theorist who wrote about a dozen scientific treatises, three of which were important to later Byzantine science, Byzant ...

's 2nd century ''

Geography Geography (from Ancient Greek ; combining 'Earth' and 'write', literally 'Earth writing') is the study of the lands, features, inhabitants, and phenomena of Earth. Geography is an all-encompassing discipline that seeks an understanding o ...

'' as living in the north-west of

Ireland Ireland (, ; ; Ulster Scots dialect, Ulster-Scots: ) is an island in the North Atlantic Ocean, in Northwestern Europe. Geopolitically, the island is divided between the Republic of Ireland (officially Names of the Irish state, named Irelan ...

, in the area of

Donegal Bay Donegal Bay () is an inlet (or bay) in the northwest of Ireland. Three Counties of Ireland, counties – County Donegal, Donegal to the north and west, County Leitrim, Leitrim and County Sligo, Sligo to the south – have shorelines on ...

.Philip Freeman, ''Ireland and the Classical World'', University of Texas Press, 2001, p. 75

References

Prehistoric Ireland Tribes of ancient Ireland {{Ireland-hist-stub