Brown Driver Briggs

 Zabad = "he endows"
1. a descendant of Judah; son of Nathan, grandson of Attai, great
grandson of Ahlai Sheshan's daughter
2. son of Tahath
3. one of David's mighty warriors (could be the same as 1 above)
4. son of Shimeath, an Ammonitess; a conspirator against and, with
Jehozabad, the murderer of Joash (also called 'Jozachar')
5. one of the sons of Zattu, who put away his foreign wife at the
command of Ezra
6. one of the descendants of Hashum, who, in the time of Ezra, had a
foreign wife
7. one of the sons of Nebo, who had a foreign wife in the time of Ezra