Brown Driver Briggs

 Akkub = "insidious"
1. son of Elioenai and descendant of David through Zerubbabel
2. a head of a family returning from exile
3. head of a family of temple slaves returning from exile
4. a Levite gatekeeper
5. a Levite who helped Ezra expound the law to the people
6. a Levite gatekeeper after the return from exile