Because the plural noun is "Messrs." the possessive form is based on the singular part of the noun "Van Ness".
There are two accepted forms for possessive singular nouns ending with an s:
Add an apostrophe (') after the existing s at the end of the word:
Add an apostrophe s ('s) after the existing s at the end of the word:
Examples:
Both of the Messrs. Van Ness' passports are in order.
Both of the Messrs. Van Ness's passports are in order.
The correct form would be "the Van Nesses'".
Singular possessive: secretary's Plural: secretaries Plural possessive: secretaries'
The plural is relatives. The plural possessive is relatives'.
The plural is lads. The plural possessive is lads'.
The plural form is Mexicans. The plural possessive is Mexicans'.
The plural possessive of stepsister is stepsisters'.
Because the plural noun is "Messrs." the possessive form is based on the singular part of the noun "Van Ness".There are two accepted forms for possessive singular nouns ending with an s:Add an apostrophe (') after the existing s at the end of the word:Messrs. Van Ness'Add an apostrophe s ('s) after the existing s at the end of the word:Messrs. Van Ness'sExamples:Both of the Messrs. Van Ness' passports are in order.Both of the Messrs. Van Ness's passports are in order.
The plural of "Mr. Van Ness" is "Messrs. Van Nesses."
The plural form of the proper noun Mr. Ness is the Mr. Nesses.The plural possessive form is Mr. Nesses'.example: Both Mr. Nesses' offices are on the second floor.
Singular possessive: secretary's Plural: secretaries Plural possessive: secretaries'
Nathan Van Ness's birth name is Nathan Edward Van Ness.
Jeff Van Ness's birth name is Jeffrey C. Van Ness.
The plural is relatives. The plural possessive is relatives'.
The plural is lads. The plural possessive is lads'.
The plural form is Mexicans. The plural possessive is Mexicans'.
The plural form is suffixes. The plural possessive is suffixes'.
The plural possessive of stepsister is stepsisters'.
The plural form is echoes. The plural possessive is echoes'.