There is Some Disagreement
Red Sonya/Red Sonja. Although some believe that Red Sonja (the comic by Roy Thomas and Barry Smith) is distinct enough from Red Sonya (by R. E. Howard) to be called an original product, I disagree because in a recent convention (Howard Days 2006), Roy Thomas publicly acknowledged the influence that Howard's work had on the comic. Therefore I conclude that Red Sonja (the comic) is itself adapted from Red Sonya (the pulp character that originated in Conan). I am open to arguments.