"Old Man Know All" has also been around for a long time. One of the best-known is Czech, a version told by Karel Jaromir Erben. Text and history of the Czech story, in English and Czech, here:
http://www.europeantales-conteseuropeens.net/rubrique.php3?id_rubrique=171
Old Man Know All

Do the European tales have anything to do with the Af-Am "Old Man Know All? Here is a fragment, source??:

OLD MAN KNOW-ALL

...Ole man Know-All's tongue, it run;
He jus know'd ev'rything under the sun...
She Hugged Me and She Kissed Me
Den I axed her w'en she'd have me,
An she jes say "Go long."

(Not sure if these are two separate fragments or if they were found together; the same spacing is maintained in the text).
The article has a useful bibliography.

Poetry: A View of African American Life,
Jean Sutherland. Yale-New Haven Teachers Institute.
http://www.yale.edu/ynhti/curriculum/units/1994/2/94.02.11.x.html
A View
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Also see: "Slave Proverbs: A Perspective." John W. Roberts, "Callaloo, no. 4 (Oct. 1978), pp. 129-140.

Dudley Randall, ed., 1971, "The Black Poets." Bantam. (Not seen)

Daryl Cumber Dance, ed., "From My People, An Anthology." (Not seen. New Book)