McGarth - - - - I'm not familar with that one....Never heard the other ones.....this is the only one I know....hope it helps.

Good Night Irene
Jerry Garcia band(aka Greatful Dead)

C D G D G C
Irene Good-night, Irene Good-night
C C7 F D
Good-night Irene, good-night Irene
C G Am G
I'll see, I'll see you in my dreams...

Last Saturday night I got married
We went and settled down
Now me and my wife are parted
I think I'll take a little walk downtown

Irene Good-night, Irene Good-night
Good-night Irene, good-night Irene
I'll see, I'll see you in my dreams...

Sometimes I live in the country
Sometimes I live in the town
Sometimes I take a fool notion
I think I'll jump in the river and drown

Irene Good-night, Irene Good-night
Good-night Irene, good-night Irene
I'll see, I'll see you in my dreams
I'll see, I'll see you in my dreams
I'll see, I'll see you in my dreams...