Pluralizing a last name can seem confusing—and it gets even more confusing when you want to make a name both plural and possessive. Let’s suppose your last name is Jones, and you and your family want ...

It's Christmas! Celebrate by not doing violence to the laws of pluralization. Photo illustration by Slate. Photo by DK-photo/iStock. Nothing quells my Christmas cheer as quickly as a stray apostrophe.