while some of the descendants of Judah and Benjamin settled in Jerusalem):

Judah’s descendants:

Athaiah son of Uzziah, son of Zechariah, son of Amariah, son of Shephatiah, son of Mahalalel, of Perez’s descendants;

As for the farming settlements with their fields:

Some of Judah’s descendants lived in Kiriath-arba and its villages,
Dibon and its villages, and Jekabzeel and its villages;