This is a traditional folk song that's centuries old. It has gone by the names The Maid Freed from the Gallows, Gallows Pole and The Sycamore Tree. Leadbelly recorded a version in 1939 and Zeppelin did a version in 1970. Stop arguing over who should get the royalties.
I love that Jimmy Page came back to New Orleans and paid a very substantial amount of money to Ledbelly and this tied Led Zeppelin to American Blues for eternity!
To all you people spewing hateful words towards Led Zeppelin in the comments: the only Led Zeppelin fans who will see them are also, likely Leadbelly fans so there's no need for all the hate. Furthermore Led Zepp were obviously Leadbelly fans as well.
Try not to clutter up all this goodness with your hate.
I'm not sure, just guessing but if you tried to find the guitar this was recorded with you can't because almost immediately after cutting this track that guitar violently erupted into flames and burned to a crisp.
Leadbelly is amazing but he never claimed any of these songs as his. He learnt them from someone just as Zepplin learnt them from him. That is what folk music is all about.