But wait - this is from page 38 of volume 5 of an 1885 publication called Outing, which says the song (four verses and a chorus) was clipped from a Mexican newspaper:

WHAT WAS YOUR NAME IN THE STATES?

We have a queer way in the West,
When a fellow his story relates,
Of making this simple request:
Say, what was your name in the States?

CHORUS
Oh what was your name in the States?
Was it Thomson or Johnson or Bates?
Did you murder your wife,
And then flee for your life?
Oh, what was your name in the States?

Of course, sir, we all understand
You say you are William G Yates;
From New Hampshire you came overland,
But -- what was your name in the States?
CHORUS

Your features are handsome, tis true,
With luck you are blessed by the fates;
Your clothing is costly and new,
But -- what was your name in the States?
CHORUS

You may be an angel, that's so,
Just slipped through the heavenly gates;
But still we are anxious to know,
Just what was your name in the States?
CHORUS


Ah, this is satisfying....to find an old version of this song, and with FOUR verses! It still isn't direct from the Days of '49, but 1885 ain't bad.
-Joe-