A search through the "Digitrad and Forum Search" on the main Forum page for bruach would get you quite a bit of information about versions of this song, but no English text, as the link provided in one of them to "Druidstone"'s website has changed.  This new one will work:  Bruach na Carraige Baine (The Edge of the White Rock)  -it's the Blasket Islands set, and the English is a translation rather than a singing version, but it's a start.

Malcolm