pronouns + relative clause

[navit]

1) We who have passed the exam will be rewarded.
2) We, who have passed the exam, will be rewarded.

Does '1' correspond to:
a) Those of us who have passed the exam will be rewarded.

and is

3) I who have lived here for three years have never seen anything like this.
correctly punctuated?

Gratefully,
Navi

[Alan]

1. No, it is simply an incorrectly punctuated version of (2). (The reference of personal pronouns is naturally exhaustive, and so relative clauses that follow them are always nonrestrictive).
(*Except where the sense is indefinite, as in 'He who laughs last laughs longest', where 'he' = 'any man/person'.)

2. Commas required (see above).