Dishon
Two men named Dishon belong to the Horite genealogies of Edom: a son of Seir who is counted as a Horite chief in the land of Edom, and a grandson of Seir through Anah. Both appear in the parallel registers at Gen 36 and 1Ch 1, where the chronicler reproduces the older Edomite list verbatim.
Dishon Son of Seir
Dishon is named among the seven sons of Seir the Horite, who are introduced as "the inhabitants of the land" before the Edomite incursion (Gen 36:20). The roster runs "Lotan and Shobal and Zibeon and Anah," then continues with "Dishon and Ezer and Dishan: these are the chiefs who came of the Horites, the sons of Seir in the land of Edom" (Gen 36:21). The chronicler preserves the same seven in the same order: "Lotan, and Shobal, and Zibeon, and Anah, and Dishon, and Ezer, and Dishan" (1Ch 1:38).
A second pass through the Genesis list re-titles each son a "chief," fixing Dishon's place in the Horite leadership of the region: "chief Dishon, chief Ezer, chief Dishan: these are the chiefs who came of the Horites, according to their chiefs in the land of Seir" (Gen 36:30).
Dishon Grandson of Seir
The same chapter introduces a second Dishon one generation down. Anah — one of Seir's sons in v.20 — has two children, and the first bears the family name: "And these are the sons of Anah: Dishon and Oholibamah the daughter of Anah" (Gen 36:25). The chronicler keeps this Dishon visible too, giving him both his father and his own four sons in a single verse: "The sons of Anah: Dishon. And the sons of Dishon: Hamran, and Eshban, and Ithran, and Cheran" (1Ch 1:41).
Genesis lists the same four sons one verse earlier than the chief-formula, with one spelling difference: "And these are the sons of Dishon: Hemdan and Eshban and Ithran and Cheran" (Gen 36:26). Hemdan in Genesis stands where the chronicler has Hamran; Eshban, Ithran, and Cheran are identical across the two registers.