From BiblePortal Wikipedia

American Tract Society Bible Dictionary [1]

 1 Chronicles 8:33 , the fourth son of Saul, generally called Ishbosheth. The word Baal , the name of an idol, was not pronounced by scrupulous Jews; they substituted BOSHETH, confusion. For Meribbaal, they said Mephibosheth, etc. See Ishbosheth .

Watson's Biblical & Theological Dictionary [2]

or ISHBOSHETH, the fourth son of Saul. The Hebrews, to avoid pronouncing the word baal, "lord," used bosheth, "confusion." Instead of Mephi-baal, they said Mephi-bosheth; and, instead of Esh-baal, they said Ish-bosheth,  2 Samuel 2:8 .

Morrish Bible Dictionary [3]

Fourth son of Saul.  1 Chronicles 8:33;  1 Chronicles 9:39 . Apparently the same as Ish-Bosheth q.v. The one name signifies 'man of Baal,' and the other 'man of shame.'

Easton's Bible Dictionary [4]

 1 Chronicles 8:33 9:39 2 Samuel 2:8

Hastings' Dictionary of the Bible [5]

Eshbaal . See Ishbosheth.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [6]

[some Esh-ba'al] (Hebrew Esba'al, אֶשְׁבִּעִל , in pause אֶשְׁבָּעִל , Man Of Baal; Sept. Ἀσαβάλ v.r. Ι᾿Εβάλ and Βαάλ , Vulg. Esbaal), the appropriate name of the fourth son of king Saul, according to the genealogy of  1 Chronicles 8:33;  1 Chronicles 9:39. He is doubtless the same person (see  1 Samuel 31:2, compared with  2 Samuel 2:8) as ISH-BOSHETH (See Ish-Bosheth) (q..v.), since it was the practice to change the obnoxious name of Baal into Bosheth or Besheth, as in the case of Jerub-besheth for Jerub-baal, and (in this very genealogy) of Merib-baal for Mephi-bosheth: compare also  Hosea 9:10, where Bosheth (A.V. "shame") appears to be used as a synonym for Baal. (See Baal).

Kitto's Popular Cyclopedia of Biblial Literature [7]

Esh´baal [ISH-BOSHETH]