Jeri posted a link to a 1975 video of Pat Sky singing. The next video that came up was Pat Sky singing the same song, Many a Mile,in 2013, and then a 1965 recording of Buffy Saint Marie singing the Pat Sky composition. I prefer the later recording by Pat Sky, more timbre in his voice I think. I don't think I'd ever heard Pat Sky play the uileann pipes, though I knew he was a piper and pipe maker. Interestingly, the 2013 song video comes from a piper's Tionol gathering, where Pat was asked to sing and play guitar as well.
Here is a video about Pat Sky: Uileann Pipe Maker

When I followed Joe Offer's link to Patrick Sky's website, I realised I had looked at not so long ago - in the past year I think. And that must have been also when I listened to some of the controversial Songs that Made America Famous, which (to the best of my memory) I had not known about at the time it was issued.

A Pat Sky discography+ https://www.wirz.de/music/skyfrm.htm