Teachers . . . please provide the correct grammatical forms . . .?

Question

. . . in referring to the house of the Jones family.

. . . in referring to the rulings by Judge Waters.

. . . in referring to disciples of Jesus.

. . . in referring to both Mr and Mrs Jones.

. . . in referring the business owned by Mr Maddux.

I will not be grading on a curve.

Answer 1

Hi... you're tough:)

. . . in referring to the house of the Jones family.
The Joneses' house

. . . in referring to the rulings by Judge Waters.
Judge Waters' rulings

. . . in referring to disciples of Jesus.
Jesus' disciples

. . . in referring to both Mr and Mrs Jones. Who... them? Ha!......The Joneses

. . . in referring the business owned by Mr Maddux.
Mr. Maddux's business

Answer 2

The Jones's house
Jesus' disciples
The Joneses' or Mr. and Mrs. Jones's
Mr. Maddux's business

These are the rules given by the Oxford English Grammar dictionary, although it does state that these are the rules that are traditionally followed, but not by all.