Major Changes made:
- Moved alternative titles to a new "Variations" section. Changed title in introduction paragraph from "The Ballad of Barbara Allen" to plain old "Barbara Allen", the lowest common denominator. Most modern literature refers to it as such, there is no need to expand the title in an anachronistic or romantic fashion -- and even one were to do that, Coffin and Child would prescribe the gay title of "Bonny Barbara Allen". Added citations for alternative titles.
- Revised story synopsis, making language more concise and adding new sources (Child and Coffin).
- Per WP:SONGCOVER, I have removed all references to modern renditions of the song which lacked both (1) additional commentary justifying their inclusion in the article and (2) a citation. All others remain intact, with some "citation needed" tags added. I have also re-named the section to better reflect its content.