Answer: The four horsemen of the Apocalypse do not have names, and their description in the book of Revelation pertains to the nature of their judgments rather than to their personal names.
The first rider, who comes forth conquering and to conquer, represents the Antichrist. He will be a world leader during the tribulation. The second rider brings on a world war because he is a assigned “to take peace from the earth.” The third horseman brings on a worldwide famine. The fourth horseman is assigned to destroy 25% of the world’s population in four different ways: by the sword (death by slaughter), by famine (death by hunger), by pestilence (death by disease), and by wild beasts (death by being hunted by wild animals).
For more details, please see my book, The Footsteps of the Messiah: A Study of the Sequence of Prophetic Events.
http://arielb.org/archives/889