Moses
Genesis 36:32ESV·traditional attribution

Bela the son of Beor reigned in Edom, the name of his city being Dinhabah.

Matthew Henry Presbyterian @wholebiblehenry

By degrees, it seems, the Edomites wormed out the Horites, obtained full possession of the country, and had a government of their own. 1. They were ruled by kings, who governed the whole country, and seem to have come to the throne by election, and not by lineal descent; so bishop Patrick observes.

Commenting on Genesis 36:31-43

John Gill Reformed Baptist @doctorgill

And Samlah died,.... As is supposed, about A. M. 2283. and Saul of Rehoboth by the river reigned in his stead; Rehoboth was one of the cities built by Ashur, Gen 10:11; and was situated near the river Euphrates; and so the Targum of Jonathan calls it Rehoboth which is by Euphrates; but Jerom (n), from Eusebius, takes it to be another city by a...

Keil & Delitzsch Lutheran @keilanddelitzsch

Gen 36:31-39 (Parallel, 1Ch 1:43-50). The Kings in the Land of Edom: before the children of Israel had a king. It is to be observed in connection with the eight kings mentioned here, that whilst they follow one another, that is to say, one never comes to the throne till his predecessor is dead, yet the son never succeeds the father, but they all belong...

Commenting on Genesis 36:31-39