Some of the descendants of Judah and Benjamin lived in Jerusalem. From Judah's Descendants: Uzziah's son Athaiah, who was the son of Zechariah, the son of Amariah, the son of Shephatiah, the son of Mahalalel; From Perez's Descendants

Zichri's son Joel was their overseer, and Hassenuah's son Judah was in command of the second district of the city.

I found a register of the original inhabitants in which there was recorded a list of descendants of the province of Judah who returned from captivity, from those who had been exiled by Nebuchadnezzar king of Babylon. They had come back to Jerusalem and to Judah, each one to his town.