his son Ladan, his son Ammihud, his son Elishama,

The Gershonites included Ladan and Shimei.

The sons of Ladan: Jehiel the oldest, Zetham, and Joel -- three in all.

The sons of Shimei: Shelomoth, Haziel, and Haran -- three in all. These were the leaders of the family of Ladan.

The descendants of Ladan, who were descended from Gershon through Ladan and were leaders of the families of Ladan the Gershonite, included Jehieli