Easton's Bible Dictionary (1897)
Heard by Jehovah. (1.) A Gibeonite who joined David at Ziklag, “a hero among the thirty and over the thirty” (1 Chr. 12:4). (2.) Son of Obadiah, and viceroy of Zebulun under David and Solomon (1 Chr. 27:19).
Smith's Bible Dictionary (1863)
(Jehovah hears), son of Obadiah; the ruler of the tribe of Zebulun in the time of King David. (1 Chronicles 27:19) (B.C. 1046.)
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
ISHMAI'AH (Jehovah hears), the ruler of Zebulun during David's reign. 1 Chr 27:19.
Hitchcock's Bible Names (1869)
hearing or obeying the Lord