Yet another example similar to the last (again, without the word "hi-lo", but worth mentioning) comes in Allen's well known "Slave Songs" collection.

1867        Allen, William Francis. _Slave Songs of the United States._ New York: A. Simpson & Co.

The example here is not tied to any particular date, but the collection was complete by 1865, so it was around before then. The song is called a "Mississippi River Boat Song"..."A very good specimen, so far as notes can give one, of the strange barbaric songs that one hears upon the Western steamboats."

I'm gwine to Alabamy
    Oh....
For to see my mammy
    Ah....
[etc.]

It really doesn't add much to the hi-lo discussion, BUT it gives a sense, for whatever it's worth, that these "going away" songs were found with boat rowing, on steamboats, during corn-shucking, and for general use.