The mountain takes its name from Saint Brendan or Bréanainn, who is said to have been born in what is now County Kerry.
A medieval work about Brendan's life calls the mountain Sliabh nDaidche (in the Irish version Beatha Bhréanainn) or Mons Aitche (in the Latin version Vita Brendani), and Alan Mac an Bhaird has translated this as "mountain of Faithche" [REF].