|Easton's Bible Dictionary|
Grasper, a descendant of Caleb, of the family of Hezron (1 Chronicles 2:47).
Int. Standard Bible Encyclopedia
ja'-da-i, ja'-di (yahday, "Yah leads" (?); Baer reads yehday): In 1 Chronicles 2:47, where six sons of Jahdai are mentioned. "The name has been taken as that of another wife or concubine of Caleb; more probably Jahdai is a descendant of Caleb, whose name, in the original connection, has fallen from the text" (Curtis, Chronicles, 96).
Jahdai (1 Occurrence)
1 Chronicles 2:47 The sons of Jahdai: Regem, and Jothan, and Geshan, and Pelet, and Ephah, and Shaaph. (WEB KJV JPS ASV BBE WBS YLT NAS NIV)