Richard Cory? Simon and Garfunkel re-wrote the original pd poem (before 1900), and they own the copyright to their version. They were not the only ones to do so.

There are eight versions copyright and listed by ASCAP.

Six versions are copyright and listed by BMI.
Paul Simon, as Songwriter/Composer for the Simon-Garfunkel song, is affiliated with BMI-
Legal Title- Richard Cory
BMI Work No. 1249332
Publisher- Paul Simon Music.

The other five with copyright are by different writers, and are sufficiently different from Simon's version to hold unasailable rights for their versions.