3 occurrences in 3 dictionaries
Reference: Darkon
Hastings
His sons were among those who returned with Zerubbabel (Ezr 2:56; Ne 7:58); called in 1Es 5:33 Lozon.
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Smith
Dar'kon
(scatterer). Children of Darkon were among the "servants of Solomon" who returned from Babylon with Zerubbabel.
(B.C. before 536).