Regem
Regem appears once in scripture, in the Calebite genealogy of 1 Chronicles 2, as one of the sons of Jahdai.
Son of Jahdai
The Chronicler lists him among six brothers: "And the sons of Jahdai: Regem, and Jothan, and Geshan, and Pelet, and Ephah, and Shaaph" (1Ch 2:47). Nothing further is said of him.