'Heads Of Families' in the Bible

Solomon addressed all Israel, including those who commanded units of a thousand and a hundred, the judges, and all the leaders of all Israel who were heads of families.

and his colleagues who were heads of families -- 242; and Amashsai son of Azarel, the son of Ahzai, the son of Meshillemoth, the son of Immer,

As for the Levites, in the days of Eliashib, Joiada, Johanan and Jaddua the heads of families were recorded, as were the priests during the reign of Darius the Persian.

The descendants of Levi were recorded in the Book of the Chronicles as heads of families up to the days of Johanan son of Eliashib.