Learned it from a Buffy Saint-Marie record. Three chords:
/Am/ Oh, Johnny be fair and Johnny be fine and /G/ wants me for to /Am/ wed
And I would marry Johnny but my /G/ father up and /E/ said
I'm /Am/ sad to tell you daughter what your /G/ mother never /E/ knew
/Am/ Johnny is a /G/ son of mine and /E/ so he's kin to /Am/ you
Enjoy!
Steve