The sons of Simeon were Nemuel, Jamin, Jarib, Zerah, and Shaul.
The descendants of Shaul were Shallum, Mibsam, and Mishma.
The descendants of Mishma were Hammuel, Zaccur, and Shimei.
Shimei had sixteen sons and six daughters, but none of his brothers had large families. So Simeon's tribe never became as large as the tribe of Judah.
They lived in Beersheba, Moladah, Hazar-shual,
Bilhah, Ezem, Tolad,
Bethuel, Hormah, Ziklag,
Beth-marcaboth, Hazar-susim, Beth-biri, and Shaaraim. These towns were under their control until the time of King David.
Their descendants also lived in Etam, Ain, Rimmon, Token, and Ashan -- five towns
and their surrounding villages as far away as Baalath. This was their territory, and these names are recorded in their family genealogy.
References for 1 Chronicles 4:33
Other descendants of Simeon included Meshobab, Jamlech, Joshah son of Amaziah,
Joel, Jehu son of Joshibiah, son of Seraiah, son of Asiel,
Elioenai, Jaakobah, Jeshohaiah, Asaiah, Adiel, Jesimiel, Benaiah,
and Ziza son of Shiphi, son of Allon, son of Jedaiah, son of Shimri, son of Shemaiah.
These were the names of some of the leaders of Simeon's wealthy clans,
who traveled to the region of Gedor, in the east part of the valley, seeking pastureland for their flocks.
They found lush pastures there, and the land was quiet and peaceful. Some of Ham's descendants had been living in the region of Gedor.
But during the reign of King Hezekiah of Judah, the leaders of Simeon invaded it and completely destroyed the homes of the descendants of Ham and of the Meunites. They killed everyone who lived there and took the land for themselves, because they wanted its good pastureland for their flocks.
References for 1 Chronicles 4:41
Five hundred of these invaders from the tribe of Simeon went to Mount Seir, led by Pelatiah, Neariah, Rephaiah, and Uzziel -- all sons of Ishi.
They destroyed the few Amalekites who had survived, and they have lived there ever since.