". 

 ::::""The root 'gal' goes a lot further back than the kingdom of Dalriada, and seems to be a Germanic term designating a foreign neighbour or ""other"", whether used of Cal-edonia, Galloway, Gaul or Galicia."" - Aye, it's a monosyllable, so of course it's old. But this doesn't appear to be relevant to the name of this hill"