Carpians
The Carpians were a Dacian tribe located on the Eastern slopes of the Carpathian Mountains.
Name
Their name ("Carpi") seems to be connected to the place where they lived, meaning "rock" or "mountain". (cf. Albanian "carpė"=rock; Armenian "kar"=stone and old czech "chrb"=mountain).
It is possible that the name of the Carpathian be derived from their name.
History
While most Dacian tribes (such as the Costoboci) were defeated by the Roman Empire, Carpians increased their power in the 2nd century AD, becoming (until the barbarian invasions), the most important adversary in the South-Eastern Europe. In 273, allied with the Goths, the carpians raided the Roman province of Moesia. Becoming a nuisance for the Roman Empire, Diocletian fought them and took the title of "Carpicus Maximus" for defeating them in 297.
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Then, the Carpians disappeared from history and it is not known their fate, but probably they were assimilated by a migrating people. Another variant is that they migrated southward to become the present-day Albanians.