Their family history shows who the family leaders were. And it also shows they had 20,200 soldiers.
Beker’s sons were Zemirah, Joash, Eliezer, Elioenai, Omri, Jeremoth, Abijah, Anathoth, and Alemeth. They all were Beker’s children.
Jediael’s son was Bilhan. Bilhan’s sons were Jeush, Benjamin, Ehud, Kenaanah, Zethan, Tarshish, and Ahishahar.