TSK · Nehemiah 11:24

Afterward his brother came out, that had the scarlet thread on his hand, and his name was called Zerah.

The sons of Judah after their families were: of Shelah, the family of the Shelanites; of Perez, the family of the Perezites; of Zerah, the family of the Zerahites.

For their office was to wait on the sons of Aaron for the service of the house of Yahweh, in the courts, and in the rooms, and in the purifying of all holy things, even the work of the service of the house of God;

Judah became the father of Perez and Zerah by Tamar. Perez became the father of Hezron. Hezron became the father of Ram.