Issachar and his sons: Tola, Puah, Jashub, and Shimron.
Leah’s sons were Reuben (Jacob’s firstborn), Simeon, Levi, Judah, Issachar, and Zebulun.
Judah and his sons: Shelah, Perez, and Zerah. (Judah’s other sons, Er and Onan, had died in Canaan.) Perez’s sons were Hezron and Hamul.
Zebulun and his sons: Sered, Elon, and Jahleel.