[1] : Easton's 1897 Bible Dictionary

hadad
   adod, brave?, the name of a syrian god. 1. an edomite king
   who defeated the midianites gen. 36:35; 1 chr. 1:46.
   
     2. another edomite king 1 chr. 1:50, 51, called also hadar
   gen. 36:39; 1 chr. 1:51.
   
     3. one of "the king's seed in edom." he fled into egypt,
   where he married the sister of pharaoh's wife 1 kings
   11:14-22. he became one of solomon's adversaries.
   
     hadad, sharp, a different name in hebrew from the preceding,
   one of the sons of ishmael 1 chr. 1:30. called also hadar
   gen. 25:15.
   

[2] : Hitchcock's Bible Names Dictionary (late 1800's)

hadad, joy; noise; clamor

Hadad >> H Words
Hadad, definition of term: Hadad
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