Numbers 26:15 Midrash

בְּנֵ֣י גָד֮ לְמִשְׁפְּחֹתָם֒ לִצְפ֗וֹן מִשְׁפַּ֙חַת֙ הַצְּפוֹנִ֔י לְחַגִּ֕י מִשְׁפַּ֖חַת הַֽחַגִּ֑י לְשׁוּנִ֕י מִשְׁפַּ֖חַת הַשּׁוּנִֽי׃

The sons of Gad after their families: of Zephon, the family of the Zephonites; of Haggi, the family of the Haggites; of Shuni, the family of the Shunites;