2 Samuel 21:19

Overview - 2 Samuel 21
The three years' famine for the Gibeonites ceases, by hanging seven of Saul's sons.
10 Rizpah's kindness unto the dead.
12 David buries the bones of Saul and Jonathan in his father's sepulchre.
15 Four battles against the Philistines, wherein four valiants of David slay four giants.
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2 Samuel 21:19  (King James Version)
And there was again a battle in Gob with the Philistines, where Elhanan the son of Jaareoregim, a Bethlehemite, slew the brother of Goliath the Gittite, the staff of whose spear was like a weaver's beam.

Elhanan, etc
Instead of [y`ry 'rgym byt hlchmy 't glyt,] of the text, we should certainly read, as in the parallel text, "and Elhanan the son of Jair, slew Lahmi the brother of Goliath."
1 Chronicles 11:26

or, Jair.
1 Chronicles 20:5

1 Samuel 17:4-11