I learnt this song from Martin Wyndham-Read in Sydney in 1961

in 4/4 tempo

The chords were simply C, F, G7

Roughly as follows:

(C) When I first came (F) to this (C) land

(C) I was not a (G7) wealthy (C) man

(C) So I got my (F) self a (C) cow

And (G7) I did what I (C) could

And I (F) called my (C) cow

(G7) no milk now

,,,
C) for the land was (F) sweet and good

and (G) I did what I C) could

Cheers, Richard-Warren Strong