Easton's Bible Dictionary (1897)
Sad; bitter, the youngest son of Levi, born before the descent of Jacob into Egypt, and one of the seventy who accompanied him thither (Gen. 46:11; Ex. 6:16). He became the head of one of the great divisions of the Levites (Ex. 6:19).
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
MER'ARI (bitter). The third son of Levi, and head of the family of the Merarites. Gen 46:11; Ex 6:16, Acts 1:19; 1 Chr 6:1, 1 Chr 6:16. The father of Judith. Jud 8:1; Jud 16:7.
Hitchcock's Bible Names (1869)
bitter; to provoke