 From Celtic *bona 'base, foundation' (Welsh bôn 'base, bottom, stump')

From Celtic *"lug-" 'Lugus' (divine name) or perhaps 'light' + *"dūnon" 'fortress'
From Celtic *"nowijo-" 'new' (Welsh "newydd") + *"magos" 'field, plain'

Second element from Celtic *"dūnon" 'fortress'

From Celtic *"bracari-" after the Bracari Celts.From Celtic *"brigant-" 'divine name, Brigantia'.From Celtic *"beira-" Cailleach/ Cale's other name Cailleach-Bheura or Beira, the Celtic Goddess of mountains, water and Winter.