The Four Horsemen: Steed of Conquest
Wikipedia wrote:Then I saw when the Lamb broke one of the seven seals, and I heard one of the four living creatures saying as with a voice of thunder, “Come.” I looked, and behold, a white horse, and he who sat on it had a bow; and a crown was given to him, and he went out conquering and to conquer...
Based on the above passage, a common translation into English, the white rider is generally referred to as "Conquest". The name could also be construed as "Victory," as in the translation found in the Jerusalem Bible (the Greek words are derived from the verb νικάω, to conquer or vanquish). He carries a bow, and wears a victor's crown.
The rider has also been called "Pestilence", particularly in popular culture.