Jim Reeves is listed as the writer in the Hillbilly and Cowboy Hit Parade"from 1956. The copyright dated 1955 is assigned to Tree Publishing Co. I think the song may be older, however.

YONDER COMES A SUCKER

Cho.
Railroad, Steamboat, River and Canal.
Yonder comes a sucker and he's got my gal
And she's gone, gone, gone,
And she's gone, gone, gone,
And I'll bid her my last farewell.

I fell in love with a pretty little thing
I thought that wedding bells would ring.
She was as sweet as sweet could be
Til I found out what she did to me.

I asked her mother to let her go.
She whispered, Mother please tell him no,
Tho' he may think that I am true
There's plenty more who think so too.

Now I won't cry my life away
Some other sucker will have to pay.
And when he finds that she is gone
I guess I'll hear him sing this song.