Francis' performance or Francis's performance?

[Unregistered]

Dear Sirs,

As raised in the title, which one is correct? And what is the rationale behind it?

(1) With regard to Frnacis' performance, ...

(2) With regard to Francis's performance, ...

Thanks a lot.

Daniel

[curmudgeon]

In a singular noun ending in s, as in Francis it is acceptable to add the apostrophe at the end - Francis' performance. However it is more correct (and more common) to use Francis's performance.