1 Chronicles 4:40

Overview - 1 Chronicles 4
The posterity of Judah by Caleb, the son of Hur.
Of Ashur, the posthumous son Hezron.
Of Jabez, and his prayer.
11 The other families of the same stock.
21 The sons of Shelah.
24 The posterity and cities of Simeon.
39 Their conquest of Gedor, and of the Amalekites in mount Seir.
Treasury of Scripture Knowledge

1 Chronicles 4:40  (King James Version)
And they found fat pasture and good, and the land was wide, and quiet, and peaceable; for they of Ham had dwelt there of old.

the land
Judges 18:7-10

These were probably either Philistines or Egyptians, who dwelt at Gedor.
Genesis 9:22-29 ; 10:6 Psalms 78:51 ; 105:23