How about ...
Blackwater side :
One (E) evening fair, I took the air,
O, down(G) by Blackwater side,
It(E) was gazing o'er & around me,
That the Irish(G) lad I espied
A quick glance through the Christy Moore songbook :
The Little Drummer has just Cm & Bb,(or D & Em etc) I'm sure you can figure when it changes. I noticed that one myself earlier this evening.
As I Roved Out : Am & G etc
And The Well Below The Valley just Dm - though the version I do has a few more that that !
There's others, but it's 3.30am.