For 10 points, name this author of "The Gift of the Magi."
The title character of one of this author's short stories annoys his captors Bill Driscoll and Sam Howard, who eventually return him to Ebenezer Dorset. In addition to "The Ransom of Red Chief," this author wrote a short story in his collection The Four Million in which Della  looks at herself in a pierglass. That story sees her buy a fob after selling her hair, and Jim selling his watch to buy her a comb. For 10 points, name this author of "The Gift of the Magi."
The title character of one of this author's short stories annoys his captors Bill Driscoll and Sam Howard, who eventually return him to Ebenezer Dorset.
{O. Henry} [accept William Sydney {Porter}]