Smith's Bible Dictionary (1863)
(descended from an old man), one of the ancestors of the Gadites who dwelt in Gilead.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
JESHISH'AI (offspring of an old man), a Gadite. 1 Chr 5:14.
Hitchcock's Bible Names (1869)
ancient; rejoicing exceedingly