Hadoram in Fausset's Bible Dictionary
1. Son of Tou or Toi, king of Hamath; sent to congratulate
David on his victory over Hadarezer (1 Chronicles 28:10),
bearing costly presents in gold, silver, and brass (antiques
according to Josephus). More likely to be the true name than
"Jeram," which contains the name of Jehovah (2 Samuel 8:10).
2. The contracted form of Adoniram (2 Samuel 20:24; 1
Kings 4:6; 1 Kings 12:18). Over the tribute, under David,
Solomon, and Rehoboam. Stoned to death when sent as one of the
old or moderate party, to appease the sedition; the choice of
the superintendent of taxes for the purpose was consistent
with the general lack of tact in Rehoboam.
Read More about Hadoram in Fausset's Bible Dictionary