Extended Strong's Hebrew Lexicon (Brown-Driver-Briggs based)
Hadar
Usage: A man living at the time of the Patriarchs, first mentioned at Gen.36.39; married to Mehetabel (H4105); also called Hadar at Gen.36.39; Another name of ha.dad (הֲדַד "Hadad" H1908H) § Hadar = "honour" an Edomite king