I am going to post a video of Judith Durham singing Danny Boy but, before I do that, there is something I feel I should explain. I have always assumed the song to be a traditional Irish love son - after all, the tune is known as The Londonderry Air - and I have long thought it one of the greatest of love songs, if not the very greatest Then I heard the introduction on this video clip. Yes, I thought, that makes sense too. But there is a more prosaic - and probably more accurate - story of the origin of the song. The tune is, indeed, a traditional Irish air, but the words were written only in 1910 by an Englishman, Frederic Weatherly in Bath. After his Irish-born sister-in-law Margaret in the United States sent him a copy of Londonderry Air in 1913, Weatherly modified the lyrics of Danny Boy to fit the rhyme and meter of Londonderry Air.
So now you know. And here is Judith Durham.