Brown Driver Briggs

 Hashub = "considerate"
1. a Merarite Levite chief, son of Azrikam
2. a son of Pahath-moab who assisted in the repair of the wall of
Jerusalem
3. a man who assisted in the repair of the wall of Jerusalem; may be
same as 2 above
4. one of the heads of the people who sealed the covenant with Nehemiah