Shobal’s sons: Alian, Manahath, Ebal, Shephi, and Onam.
Zibeon’s sons: Aiah and Anah.

Judah’s sons: Er, Onan, and Shelah. These three were born to him by Bath-shua the Canaanite woman. Er, Judah’s firstborn, was evil in the Lord’s sight, so He put him to death.

Jerahmeel had another wife named Atarah, who was the mother of Onam.

Onam’s sons: Shammai and Jada.
Shammai’s sons: Nadab and Abishur.