1 Chronicles 3:21

Pelatiah, etc.] It seems most likely that this and the five names that follow all represent sons of Hananiah, constituting a single generation, in which case the generations reckoned after Zerubbabel amount to six. Zerubbabel lived about 520 b.c., and if 30 years be reckoned as a generation, the sixth generation would bring the last down to about 340 (the time of Alexander the Great).