Thanks to your question, I went to LINKS at top of page and soon found:

Francis J. Child Ballads http://www.childballads.com

Francis J. Child Ballads; with Biography of Child, Complete List of Child Ballads, Lyrics, Tune Information, Midis, Historical Background and Tune Related Links

What it didn't tell me ans was a lovely surprise was that it includes Carolan stuff too!!!!

When I went there briefly it began to lay me a tune. I'm going back there now!

There was an entry there on Outlandish Knight.