Arpachshad was Shelah's father and Eber's grandfather.
Shem was the ancestor of Elam, Asshur, Arpachshad, Lud, Aram, Uz, Hul, Gether, and Meshech; they were the ancestors of the kingdoms named after them.
Eber named his first son Peleg, because in his time the earth was divided into tribal regions. Eber's second son was Joktan,