Charles Ellicott Commentary 1 Chronicles 2:31

"And the sons of Appaim: Ishi. And the sons of Ishi: Sheshan. And the sons of Sheshan: Ahlai." — 1 Chronicles 2:31 (ASV)

The children of Sheshan; Ahlai. —See Note on 1 Chronicles 1:41, “Dishon.” Ahlai is the name of a clan, not of an individual. Others would explain such phrases by assuming that “sons of so-and-so” is a conventional expression, used even where only one person has to be registered; or that the chronicler has in such cases abbreviated the contents of his source, by omitting all the names but one. Both assumptions are antiquated.