Plurals

Q. I am making a plaque which reads “Happy Holidays.” Underneath is a picture of a sled. Underneath that is “The Simmons.” Their last name is Simmons (with an s). How should it read on the plaque? The Simmons’, The Simmons’s, or just The Simmons? Thank you.

A. None of the above. You just want a regular plural: The Simmonses. This is like any other plural of a word that ends in s: buses, kisses, messes, Joneses.

[This answer relies on the 17th edition of CMOS (2017) unless otherwise noted.]