John Gill Commentary 1 Chronicles 2:53

"And the families of Kiriath-jearim: The Ithrites, and the Puthites, and the Shumathites, and the Mishraites; of them came the Zorathites and the Eshtaolites." — 1 Chronicles 2:53 (ASV)

And the families of Kirjathjearim That dwelt there, of which Shobal was prince, and who sprung from him, are as follow:

the Ithrite, and the Puhites, and the Shumathites, and the Mishraites; who had their names from Jether, Putha, Shumath, and Mishra, descendants of Shobal:

of them came the Zareathites, and the Eshtaulites; that is, from the Mishraites sprung the inhabitants of Zeroth and Eshtaol, places in the tribe of Judah, (Joshua 15:33).