Hadad died also. And the dukes of Edom were; duke Timnah, duke Aliah, duke Jetheth, Hadad died - "And his kingdom ended; for his land was subdued by the children of Esau, and the dukes of Edom ruled in the land of Gebala." - T.
For various particulars in this chapter, see Genesis 10 (note) and Genesis 36 (note), and the parallel places.