Phil, you're probably right about the authorship. (Memory fading here. I heard Erik sing it and I think Pat learned it from him. If that's wrong, too, I give up.) That same memory is what I am using for the chords. I heard the song once by EF and twice by Pat Sky on his "Songs That Made America Famous".

(D) In a (G) country way (A or A7) over the (D) ocean
There's a (G) man who (A or A7) has a strange (D)notion
That (G) he is the world's one great hope
(A7) He's (G) Giovanni (A) Montini, the (D)Pope

Gio(G)vanni Bap(A)tiste Mon(D)tini
Who (G)lives in the (A)Vatica(D)nini
Why, he (G)don't even need to use soap
(A7) He's (G) Giovanni (A) Montini, the (D)Pope