The porters, like the singers Nehemiah 12:29, dwelt for the most part in the villages round Jerusalem. They were the descendants of those originally selected for the work by David. David’s arrangements are here regarded as having had the sanction of Samuel - which would imply that he planned them in the lifetime of Saul, while he was still a fugitive and an outlaw.
Related Commentaries of 1 Chronicles 9:22
1 Chronicles 9:22
22 All these which were chosen to be porters in the gates were two hundred and twelve. These were reckoned by their genealogy in their villages, whom David and Samuel the seer did ordain in their set office.