Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
MAL'CHAM (their king). A Benjamite chief. 1 Chr 8:9. As occurring in Zeph 1:5, it is understood by some as an idol in general, by others as signifying Moloch.
Hitchcock's Bible Names (1869)
Malchom, their king; their counselor