1)
Seeing as, in the desert, all the grandchildren of the tribes encamped together their parents (See Oznayim la'Torah) why did some of Peretz children - Chetzron and Chamul - split into separate families?
1.
Oznayim la'Torah: Perhaps it is because Chetzron and Chamul were particularly wise and G-d-fearing men of valor, and their children wanted to to be Misyaches after them. 1
1
See Oznayim la'Torah, who elaborates nd who points out that the same applies to I'ezer, Cheilek and Cheifer of Gil'ad of the tribe of Menasheh and some of the other tribes.
