Zechariah, the son of Jeberechiah, was one of two men Isaiah took as “faithful witnesses to record” concerning Maher-shalal-hash-baz, the name the Lord told Isaiah to write on a great roll (2 Nephi 18:1-2). The other witness was Uriah the priest (2 Nephi 18:2).
This is Zechariah’s only mention; the passage parallels the same account in Isaiah, and the record gives no further detail about him.