Charles Ellicott Commentary 1 Chronicles 27:21

"of the half -[tribe] of Manasseh in Gilead, Iddo the son of Zechariah: of Benjamin, Jaasiel the son of Abner:" — 1 Chronicles 27:21 (ASV)

Of the half tribe of Manasseh in Gilead. —Rather, towards Gilead, Gilead-ward: i.e., on the east of the Jordan, in Gilead and Bashan.

Iddo the son of Zechariah. —The prophet Zechariah was a son of Berechiah, son of Iddo, and may have descended from this Iddo.

Jaasiel the son of Abner, was, doubtless, a son of Saul’s famous marshal.