בְּנֵ֣י זְבוּלֻן֮ לְמִשְׁפְּחֹתָם֒ לְסֶ֗רֶד מִשְׁפַּ֙חַת֙ הַסַּרְדִּ֔י לְאֵל֕וֹן מִשְׁפַּ֖חַת הָאֵלֹנִ֑י לְיַ֨חְלְאֵ֔ל מִשְׁפַּ֖חַת הַיַּחְלְאֵלִֽי׃
The sons of Zebulun after their families: of Sered, the family of the Seredites; of Elon, the family of the Elonites; of Jahleel, the family of the Jahleelites.
Read midrashic interpretation of Numbers 26:26: and classical rabbinic exegesis.