4 occurrences in 4 dictionaries
Reference: Gatam
Hastings
The son of Eliphaz (Ge 36:11 = 1Ch 1:36), and 'duke' of an Edomite clan (Ge 36:16) which has not been identified.
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Smith
Ga'tam
(a burnt valley), the fourth son of Eliphaz the son of Esau,
and one of the "dukes" of Eliphaz.
(B.C. after 1760.)