HENADAD (hĕn'a-dăd, favor of Hadad). Head of a family of Levites who helped Zerubbabel (Ezra.3.9) and who in the next century helped Nehemiah in rebuilding the wall of Jerusalem (Neh.3.18, Neh.3.24).
HENADAD hĕn’ ə dăd (חֵֽנָדָ֔ד, prob. favor of Hadad [weather deity]). Head of a house of priests who helped rebuild the Temple under Zerubbabel (Ezra 3:9), assisted in rebuilding the wall of Jerusalem in the time of Nehemiah (Neh 3:18, 24), and signed Ezra’s covenant (Neh 10:9).
International Standard Bible Encyclopedia (1915)
(chenadhadh, "favor of Hadad"; Septuagint Henaad; Henadad; Henadab; Henalab (Ezr 3:9; Ne 3:18,24; 10:9)): One of the heads of the Levites in the post-exilic community.