English grammar help

[mudworm]

My nephew from China decided to go by the nick name Aldous. Now, in our communications, sentences like this come up: it will be Aldous' decision.

My question is, should it rather be: it will be Aldous's decision ?

[mudworm]

Funny how right after I post, I read an article that has a sentence using the latter composition. Guess I should say it will be Aldous's decision.

[JC w KC redux]

Funny how right after I post, I read an article that has a sentence using the latter composition. Guess I should say it will be Aldous's decision.

I would be inclined to just add the apostrophe and not the extra s - now considered the old fashioned approach.
The English language is dying so now either way is acceptable...

[mungeclimber]

http://www.bartleby.com/141/strunk.html

[mudworm]

Thanks, KC, and thanks, Munge!

I'll stick to "Aldous's decision."

When talking about exceptions: "Such forms as Achilles' heel,... are commonly replaced by the heel of Achilles."

The heel of Achilles... it sounds so weird.