John Gill Commentary 1 Chronicles 4:2

"And Reaiah the son of Shobal begat Jahath; and Jahath begat Ahumai and Lahad. These are the families of the Zorathites." — 1 Chronicles 4:2 (ASV)

And Reaiah the son of Shobal begot Jahath
Reaiah is the same as Haroeh, (1 Chronicles 2:52) the names are of the same meaning:

and Jahath begot Ahumai, and Lahad. These are the families of the
Zorathites
who inhabited Zoreah, as the Targum, at least part of it; see (1 Chronicles 2:53 1 Chronicles 2:54) .