NET

11 Jahath was the oldest and Zizah the second oldest. Jeush and Beriah did not have many sons, so they were considered one family with one responsibility.

Darby

11 And Jahath was the head^D2453, and Ziza the second; and Jeush and Beriah had not many sons: as father's house, therefore, they were reckoned as one.

Darby Bible Notes

head - Or 'the first.'

KJV

11 And Jahath was the chief, and Zizah the second: but Jeush and Beriah had not many sons^K2423; therefore they were in one reckoning, according to [their] father's house.

KJV Bible Notes

had not many sons: Heb. did not multiply sons.

Strong's

11 And Jahath^H3189 was the chief^H7218, and Zizah^H2125 the second^H8145: but Jeush^H3266 and Beriah^H1283 had not many^H7235 sons^H1121; therefore they were in one^H259 reckoning^H6486, according to their father's^H1 house^H1004.