Brown Driver Briggs

 Baruch = "blessed"
1. friend, amanuensis, and faithful attendant of Jeremiah
2. a priest, the son of Zabbai who assisted Nehemiah in rebuilding
the walls of Jerusalem
3. a priest, or family of priests, who signed the covenant with Nehemiah
4. son of Col-hozeh, a descendant of Perez or Pharez, the son of Judah