פירוש על במדבר 26:38

לאחירם OF AHIRAM — He is identical with Ehi (אחי) who went down to Egypt (Genesis 46:21), and because he was called after Joseph’s name (Sotah 36b), who was his (Benjamin’s) brother (אח) and greater, (רם) than he, he was also called Achiram.

לבלע, to Bela, etc;” the sons of Bela were divided into three families, one named after its founder, two after Arad and Naamon,

לאחירם, he is identical with Ehi.