THE (7) PREDECESSORS TO HADAR:
Gen. 36:32-38   And (1) Bela the son of Beor reigned in Edom: and the name of his city was Dinhabah. And Bela died, and (2) Jobab the son of Zerah of Bozrah reigned in his stead.  And Jobab died, and (3) Husham of the land of Temani reigned in his stead.  And Husham died, and (4) Hadad the son of Bedad, who smote Midian in the field of Moab, reigned in his stead: and the name of his city was Avith.  And Hadad died, and (5) Samlah of Masrekah reigned in his stead.  And Samlah died, and (6) Saul of Rehoboth by the river reigned in his stead.  And Saul died, and (7) Baal-hanan the son of Achbor reigned in his stead.

THE TWELVE CHIEFS:
Gen. 36:40-43   And these are the names of the dukes that came of Esau, according to their families, after their places, by their names; (1) duke Timnah, (2) duke Alvah, (3) duke Jetheth, (4) duke Aholibamah, (5) duke Elah, (6) duke Pinon, (7) Duke Kenaz, (8) duke Teman, (9) duke Mibzar, (10) duke Magdiel, (11) duke Iram: these be the dukes of Edom, according to their habitations in the land of their possession: he is (12) Esau the father of the Edomites.