Writing a family name on a card or party sign seems easy until you run into names like Harris, Lopez, or Church. Suddenly, you are staring at options like Harris’, Harrises, and the Harris’s and wondering which one is right. This guide breaks down the rules so you can confidently pluralize last names ending in S (and other tricky letters) every time.
Why Plural Last Names Confuse So Many People
Plural family names are common in everyday life—on holiday cards, wedding invitations, mailbox labels, and social media posts. Yet many adults never learned a clear rule, especially for names that already end with an S sound. Style guides and usage manuals consistently confirm that there is a straightforward system, but because we mix up plurals and possessives, errors keep spreading in print and online.
Before you can master names like Hughes or Ross, you need to separate two ideas:
- Plural: more than one person or family (the Parkers)
- Possessive: showing ownership (the Parkers’ house)
On cards, door mats, and email greetings, you almost always want the plural, not the possessive.
The Core Rule: Last Names Follow Normal Noun Plural Patterns
Most last names take the same plural endings as ordinary English nouns, a point reaffirmed in major style references like The Chicago Manual of Style and other grammar authorities. That means you do not need a special “family name” rule—you mainly apply what you already know about plurals.
| Type of ending | Example name (singular) | Correct plural form | Pronunciation tip |
|---|---|---|---|
| Most letters (no special sound) | Walker | Walkers | Add an S sound |
| Ends in S, X, Z, CH, SH | Harris, Fox, Lopez, Finch, Bush | Harrises, Foxes, Lopezes, Finches, Bushes | Add -es (sounds like “iz” or “ez”) |
| Ends in Y after a consonant | Murphy | Murphys | Names keep the Y (no -ies) |
The trouble zone is clearly the second row—names that already end in an S-like sound. That is where the rest of this article focuses.
Step-by-Step: Making S-Ending Last Names Plural
When a last name ends in S, X, Z, CH, or SH, the plural almost always adds -es, exactly like regular nouns (class → classes, box → boxes).
1. Identify the final sound, not just the final letter
Ask: does the name sound like it ends in an S or Z sound? If so, you probably need -es to make it pronounceable as a plural.
- Harris → the Harrises
- Lewis → the Lewises
- Jones → the Joneses
- Lopez → the Lopezes
The added syllable (“iz” or “ez”) makes the plural easy to say out loud.
2. Add -es for S, X, Z, CH, and SH endings
Here is the basic pattern you can apply almost automatically:
- -s → add -es: Harris → Harrises
- -x → add -es: Fox → Foxes
- -z → add -es: Cruz → Cruzes
- -ch → add -es: March → Marches
- -sh → add -es: Marsh → Marshes
Grammarians note that the pronunciation-based “exceptions” some people mention are not supported by the major style manuals; they consistently favor -es plurals for these endings.
3. Never use an apostrophe to make a last name plural
In formal English, an apostrophe is never used to form the plural of a standard noun, including family names. The apostrophe signals ownership, not “more than one.”
Avoid these common errors:
- Wrong: The Harris’ are coming to dinner.
- Right: The Harrises are coming to dinner.
- Wrong: Merry Christmas from the Jones’s.
- Right: Merry Christmas from the Joneses.
Possessive vs. Plural: Where People Get Tripped Up
Many people confuse the plural family name (more than one person) with the possessive form (showing that the family owns something). Style guides such as those used in universities and newsrooms provide specific patterns for possessives that differ from simple plurals.
Plural family (no ownership)
- We had dinner with the Thomases.
- Happy New Year from the Garcias.
Plural possessive family (ownership)
- We went to the Thomases’ house.
- We met at the Garcias’ cabin.
Notice the order:
- Make the name plural first: Thomas → Thomases, Garcia → Garcias.
- Then show possession with an apostrophe after the plural S: Thomases’ house, Garcias’ cabin.
Quick Reference Table: Common Last Name Endings
| Ending | Example (one person) | Correct plural (family) | Incorrect forms to avoid |
|---|---|---|---|
| -s | Harris | the Harrises | the Harris, the Harris’, the Harris’s |
| -es | Hughes | the Hugheses | the Hughes’, the Hughes |
| -x | Fox | the Foxes | the Fox’s (for plural), the Foxs |
| -z | Lopez | the Lopezes | the Lopez’s (for plural), the Lopez |
| -ch | March | the Marches | the March’s (for plural) |
| -sh | Bush | the Bushes | the Bush’s (for plural) |
| -y after consonant | Murphy | the Murphys | the Murphies |
Names Ending in S Plus an Apostrophe: When It Is Correct
You will see forms like Harris’ and Lewis’ in good writing—but there they are possessive, not plural. Different style guides treat singular names ending in S slightly differently, but they agree that the apostrophe has nothing to do with making things plural.
- Singular possessive (one person named Harris owns something)
- Chicago-style: Harris’s car
- AP-style: often Harris’ car in journalism contexts
- Plural possessive (the whole Harris family owns something)
- Plural family: the Harrises
- Possessive: the Harrises’ house
For holiday cards and invitations, you usually want the simple plural family name. That means no apostrophe at all: “The Harrises.”
Practical Tips for Cards, Signs, and Social Media
To avoid last-minute second-guessing when you are addressing envelopes or designing invitations, use this short checklist.
1. Ask what you are really trying to say
- If you are just naming the people, use the plural: The Joneses, The Harrises.
- If you are describing something they own, use the plural possessive: The Joneses’ party, The Harrises’ backyard.
2. Say it out loud
English plurals are built around what is easy to pronounce. If saying the family name with just an S feels impossible, you almost certainly need -es. This is why names that already end in an S sound ordinarily take another syllable when pluralized.
3. Be consistent across all your materials
Usage authorities emphasize that when there are competing but acceptable forms, consistency is more important than choosing one “perfect” option. Once you settle on “the Joneses” as your plural, do not switch to “the Jones'” somewhere else in the same project.
Short Examples for Tricky Endings
Use these as templates you can adapt to your own names.
- Classroom newsletter: “This month we interviewed the Hugheses about their family traditions.”
- Wedding website: “After the ceremony, join us at the Lopezes’ ranch for a reception under the stars.”
- Holiday card: “Warmest wishes from the Marches.”
- Party sign: “Welcome to the Foxes’ backyard barbecue!”
Frequently Asked Questions (FAQs)
Q: How do I pluralize a last name that already ends in S?
A: Most style guides recommend adding -es. So Harris becomes the Harrises, and Lewis becomes the Lewises.
Q: Is it ever correct to write “The Harris'” as a plural?
A: No. An apostrophe does not make a noun plural in standard English. “The Harris'” would be interpreted, if at all, as a possessive form, not a plural family name.
Q: What about names like “Jones” or “Lopez” that end with a Z sound?
A: They still take -es in the plural: the Joneses, the Lopezes. Pronunciation differences do not change the basic spelling rule.
Q: Should I follow AP Style or Chicago Style for possessive names ending in S?
A: For journalism, AP Style often prefers just an apostrophe for singular proper names ending in S (for example, Harris’ speech). For books and many other kinds of writing, Chicago-style Harris’s is common. Either way, these rules affect only possessives, not simple plurals.
Q: Do I change Y to I-E-S for last names like “Murphy”?
A: No. Surnames usually keep the Y. The correct plural is the Murphys, not the Murphies, a pattern also recommended in etiquette and style discussions of family names.
Q: What if my family prefers a different spelling?
A: Families sometimes adopt their own traditional spellings for casual use, but if you want to match standard edited English and major style manuals, follow the patterns in this guide.
References
- The Chicago Manual of Style, 17th Edition — University of Chicago Press. 2017-09-05. https://www.chicagomanualofstyle.org
- How To Format Plural Names — The Stationery Studio. 2023-11-01 (accessed). https://www.thestationerystudio.com/studio-insights/etiquette/how-to-format-plural-names.cfm
- How to Add Possessives in AP Style — University of Minnesota, University Relations. 2024-08-09. https://umarcomm.umn.edu/blog/2024/08/09/how-add-possessives-ap-style
- James’ or James’s? Making Names that End in “S” Possessive — September C. Fawkes. 2022-08-22. https://www.septembercfawkes.com/2022/08/james-or-jamess-making-names-that-end.html
- Integrated M.A. in Applied Linguistics, University of Hyderabad
- 5+ years in editorial, instructional, SEO, and research-based writing
Sneha is a relationships and lifestyle writer with a strong foundation in applied linguistics and certified training in relationship coaching. She brings over five years of writing experience to theskillvault, crafting thoughtful, research-driven content that empowers readers to build healthier relationships, boost emotional well-being, and embrace holistic living. Her writing and insights reflect the belief that beauty, happiness, and wellness…