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).
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"Dives." In A Dictionary of the Bible. Ed. W. R. F. Browning. Oxford Biblical Studies Online. Nov 28, 2015. <http://www.oxfordbiblicalcstudies.com/article/opr/t94/e541>.
"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 Nov 28, 2015).