Jonathan is mentioned in the previous verse, and Jerahmeel was introduced in verse 9 as the son of Hezron.

These were the descendants of Jerahmeel: This concluding sentence closes the subsection that began with verse 25. It may be made a separate paragraph (so La Bible de Jérusalem: Nouvelle édition revue et corrigée).

Quoted with permission from Omanson, Roger L. and Ellington, John E. A Handbook on 1-2 Chronicles, Volume 1. (UBS Helps for Translators). Miami: UBS, 2014. For this and other handbooks for translators see here .