What is the possessive noun for Matthew Kitsos?

Answer 1

There are two accepted forms for possessive singular nouns ending in s:

Add an apostrophe (') after the existing s at the end of the word: Matthew Kitsos'

Add an apostrophe s ('s) after the existing s at the end of the word: Matthew Kitsos's

Examples:

We met Matthew Kitsos' parents at the meeting.

We met Matthew Kitsos's parents at the meeting.

Answer 2

The possessive form of the noun Matthew Kitson is Matthew Kitson's.

Example:

Doctor Mathew Kitson's specialties are gastroscopy and colonoscopy.

Answer 3

The possessive form is Matthew Kitsos's.