Related to the harp, or person who played the harp (in case you couldn’t crack that code), this one has both male and female origins. Musical preferences aside, the name is also popular with To Kill A Mockingbird fans.
Famous people named Harper-unisex:
Author of To Kill a Mockingbird Harper Lee; daughter of David and Victoria Beckham (a.k.a. makers of beautiful humans).
Harper has been one of the most common first names in Australia, New Zealand, and Canada in recent years.