I heard this song from a New Christy Minstrals recording about America Folk heroes. Its based on the discovery of a body found after the battle of Brandywine. A colonial, armed with a single jack had dispatched 20 Hessian mercinaries. All the songs were supposedly based in fact. Also on the record was a song called "El Camino Real" an interesting song about the fight to free California.
The only person I have ever heard sing this song outside of the NCM is a friend in Atlanta named Michael Waters. I can supply the lyrics but it will take time.
Don Meixner