Unnamed rich man. Luke 16: 19–31 is the only parable of Jesus in which a character is given a name (Lazarus) and it has become usual also to attach the name Dives to the other actor in the story. It is from the Latin Vulgate (dives = wealthy).
Citation for Dives
Citation styles are based on the Chicago Manual of Style, 15th Ed., and the MLA Style Manual, 2nd Ed..
MLA
"Dives." In A Dictionary of the Bible. Ed. W. R. F. Browning. Oxford Biblical Studies Online. May 21, 2013. <http://www.oxfordbiblicalcstudies.com/article/opr/t94/e541>.
Chicago
"Dives." In A Dictionary of the Bible. , edited by W. R. F. Browning. Oxford Biblical Studies Online, http://www.oxfordbiblicalcstudies.com/article/opr/t94/e541 (accessed May 21, 2013).