Genesis 46:12

46:12 The sons of Judah:

Er, Onan, Shelah, Perez, and Zerah

(but Er and Onan died in the land of Canaan).

The sons of Perez were Hezron and Hamul.

Numbers 26:19

Judah

26:19 The descendants of Judah were Er and Onan, but Er and Onan died in the land of Canaan.