If you want to talk about something that belongs to more than one member of a family, you start with the plural form and add an apostrophe to show possession: the Smiths' car a party at the Fernandezes' house the Daleys' driveway

Plural nouns refer to more than one person or thing, for example 'brothers'. To show possession when the noun is plural and already ends in 's', you just add an apostrophe to the end of the word. You don't need to add an extra 's'. For example: The brothers' feet were muddy. The cats' fur is very fluffy.

If a proper plural noun already ends in an -s, you have the ability to choose how possession is shown. Add an apostrophe after the -s. For example: The reunion of the Davis family = The Davis’ Family Reunion Or, add an apostrophe -s at the end. For example: The reunion of the David family = The Davis’s Family Reunion

We add 's to singular nouns to show possession: We are having a party at John's house. Michael drove his friend's car. We add ' to plural nouns ending in -s:

Rule 2a. Regular nouns are nouns that form their plurals by adding either the letter s or es (guy, guys; letter, letters; actress, actresses; etc.). To show plural possession, simply put an apostrophe after the s.