Bible Dictionaries
Irad

Fausset's Bible Dictionary

Son of Enoch, grandson of Cain, father of Mehujael (Genesis 4:18). The similarity of the names to those in Seth's line, Enoch, Cainan, Jared, Mahalaleel, arose from the paucity of names at first, the relationship of Seth's and Cain's families, and their occasional intercourse. Still there is difference enough in the names to distinguish them.

Bibliography Information
Fausset, Andrew R. Entry for 'Irad'. Fausset's Bible Dictionary. https://www.studylight.org/​dictionaries/​eng/​fbd/​i/irad.html. 1949.