Horatio McCoy

Lt. Commander Horatio "Harry" McCoy was a Starfleet officer in the late 24th century. Born in the 2330s, he was the great-great-grandson of Admiral Leonard H. McCoy. From 2368 until sometime in the 2380s, he served as chief engineer aboard the USS Christopher Pike. (Star Trek: Pendragon: "Sword of Damocles", "The Argonaut Syndrome")