Charles Ellicott Commentary 1 Chronicles 4:20

"And the sons of Shimon: Amnon, and Rinnah, Ben-hanan, and Tilon. And the sons of Ishi: Zoheth, and Ben-zoheth." — 1 Chronicles 4:20 (ASV)

The Sons of Shimon. —Nothing is said elsewhere of them, or of the sons of Ishi. Ishi (1 Chronicles 2:31) is a Jerahmeelite name; but as throughout the section (1 Chronicles 4:2–19) we have found indications that the ramifications of the house of Caleb are the principal subject, and as 1 Chronicles 4:20 is appended to the rest, without any opposing remark, it is highly probable that it also refers to some Calebite clans and towns.