6 Obed-Edom’s son Shemaiah also had sons, who were leaders in their father’s family because they were very capable men.

Read 1 Chronicles 26:6 Using Other Translations

Also unto Shemaiah his son were sons born, that ruled throughout the house of their father: for they were mighty men of valour.
Also to his son Shemaiah were sons born who were rulers in their fathers' houses, for they were men of great ability.
Obed-edom’s son Shemaiah had sons with great ability who earned positions of great authority in the clan.