The wonderful thing about folk music is that there is no one “original” or “correct” version of any song. Everybody has their own version that they learned from hearing somebody else sing it. You can’t necessarily find a recording of it anywhere, not even online.
For posterity’s sake, this is my performance of the traditional song “Fare You Well, Mary Ann” as I learned it. It can be found in popular song collections published in the mid-1800s, but I heard a story that it was first sung by a Canadian sailor to someone who remembered it and wrote it down. Verses vary, depending on who you ask.
I came up with these words and chords from my notoriously faulty memory, so they may not sound like what you know, if you know the song. I hope you like this version anyway. :)
(art from here)