[Lucius Cornelius Sulla]

I thought that the Dacians were the easternmost Celtic people in Europe? The Galatians were further east in Asia Minor, and the Helvetians were a little west in Switzerland. I kind of like the idea of a Celtic people speaking a romance language and belonging to the Orthodox Church.

[Cronos]

Not really -- the Dacians/Thracians/Getae were a separate sister-branch of the Indo-European family. As you see in the figure below, this is sandwiched between the Hellenic and Albanian families


The Galatians were invaders in the 3rd century but the Dacians are attested to far before that -- right from the Greek histories of the Thracians.

There isn't such a big deal though -- all of them were Aryanic peoples: Italics or Greeks or Thracians or Celts or Slavics or Germanic/Nordics or Baltics or Albanians or Anatolians or Iranis (Scyths/Sarmatians).