Elhanan son of Dodo in Wikipedia

The Biblical Elhanan was the son of Dodo (2 Samuel 23:24, 1 Chronicles 11:26). He was a member of King David’s elite fighters known as The Thirty. Some believe he was in fact the same person as the Elhanan mentioned in 2 Samuel 21:19 and 1 Chronicles 20:5, the son of Jair from Bethlehem, and that the Bible is crediting him as the killer of Goliath. It should be pointed out that the Hebrew names, David, and Dodo are very similar, and originally were written without vowels as, "DVD" and "DDV" respectively.