What is the plural possessive of proper names ending in ss?

Answer 1

To form the plural of a name ending in -ss, add -es to the end or the word; for example:

• one Jess, two Jesses
• one Bess, two Besses

To form the possessive of a plural noun ending with -s, add an apostrophe (') at the end, for example:

• The two Jesses' last names are Green and Brown.
• The two Besses' last names are Smith and Jones.

Answer 2

The plural possessive of proper names ending in "ss" is formed by adding an apostrophe after the final "s" ('). For example, "The Joneses' car" for a family with the last name "Jones."