I think you may have said it before, but out of curiousity, why is it you doubt ancient Celtic longswords?If there had been two handed swords in the EB period, wielded by Celts then possible names for such weapons might be;
*dualâmâtas (two-hander)
*marocledon (great-sword)
*cledon maron (large sword - Gaelic clamh mór)
So you could have Dualâmâtas Lugion, Marocledon Lugion or Cledon Maron Lugion. However, I think it's a futile exercise trying to reconstruct proper Gaulish names for units which obviously never existed.
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