1 Chronicles 4:3

And, these, were the sons of Etam, Jezreel and Ishma, and Idbash, - and, the name of their sister, was Hazzelelponi;

Judges 15:11

Then went down three thousand men out of Judah, unto the cleft of the crag Etam, and said unto Samson - Knowest thou not that the Philistines are lording it over us? What, then, is this thou hast done to us? And he said unto them, As they have done to me, so, have I done to them.

2 Chronicles 11:6

yea he built Bethlehem and Etam, and Tekoa;

Treasury of Scripture Knowledge

Summary

And these were of the father of Etam; Jezreel, and Ishma, and Idbash: and the name of their sister was Hazelelponi:

Bible References

Etam

Judges 15:11
Then went down three thousand men out of Judah, unto the cleft of the crag Etam, and said unto Samson - Knowest thou not that the Philistines are lording it over us? What, then, is this thou hast done to us? And he said unto them, As they have done to me, so, have I done to them.
2 Chronicles 11:6
yea he built Bethlehem and Etam, and Tekoa;