Plural of people names

[Tung Quoc]

Dear teachers,

If in my class, there are 3 persons called Thomas.
So,please choose the correct sentences:

1. There are 3 Thomas in my class.
2. There are 3 Thomases in my class.
3. These are Thomas's books.
4. These are Thomases's books.
5. These are Thomases' books.
6. These are Thomas' books.

Thanks
Quoc

[Yankee]

.
I only like:
2. There are 3 Thomases in my class.

"There are three people named Thomas in my class."

Trying to talk about a group of books belonging to 3 different people named Thomas doesn't make sense and/or would not be something you're ever likely to have to actually say.

Just out of curiosity, is "Thomas" supposed to be the first or the last name?

Amy
_________________
"Nearly all men can stand adversity, but if you want to test a man's character, give him power." ~ Abraham Lincoln

[Tung Quoc]

Dear teacher,

If there are 6 books. these 6 books belong to these 3 Thomases.

So, I'd say 4,5 or 6?

Thanks
Quoc

[Yankee]

.
As I said, I don't like any of your options.

I would say "These 6 books belong to the three people named Thomas."

Amy
_________________
"Nearly all men can stand adversity, but if you want to test a man's character, give him power." ~ Abraham Lincoln