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TheDiduni or Dunii were aGermanic tribe mentioned only by the 2nd century geographerClaudius Ptolemy. They apparently dwelt near the Asciburgius mountains which correspond to the north central parts ofSudetes in western-southernPoland. According to Ptolemy, they were part of the larger tribal group, theLugii. The Diduni are may be connected to the town ofLugidunum,[1] which Ptolemy places in the same area as he places the tribe.[1]
It is made up of the prefix 'di-', which is suggested to be analogous to the Latin suffix of 'de', meaning 'of', 'from', 'down from' or 'originating from', in addition to 'dun' and the latin suffix '-i' which would culminate to 'from the fort'.[2]