Two efforts here. One is a simplified chord progression. It does miss a note or two, but eases some rather quick changes in Seed's version. Second, I just want to see if I have this HTML (rhymes with H double hockey sticks) down pat.

Joe is right (Max must've cleared those recent glitches up). The verses are straight Wildwood Flower. My and Seed's version of the chorus are in the key of G (I usually play Wildwood Flower in C)

  G                          C
  What were their names, oh, what were their names?
      D                        G
  Did you have a friend on the good Reuben James?
                             C
  What were their names, oh, what were their names?
      D                        G
  Did you have a friend on the good ship Reuben James?

Enjoy the song!

Roger in Baltimore