John Gill Commentary Nehemiah 3:9

"And next unto them repaired Rephaiah the son of Hur, the ruler of half the district of Jerusalem." — Nehemiah 3:9 (ASV)

And next unto them repaired Rephaiah, the son of Hur, the ruler
of the half part of Jerusalem .
] That city belonging partly to the tribe of Judah, and partly to the tribe of Benjamin; one part of it was under a governor that was of the tribe of Judah, as this man seems to be; and the other part under one of the tribe of Benjamin; see (Nehemiah 3:12) .