This article is from the FAQ, by with numerous contributions by others.
You should obtain sworn affidavits from two relatives. A sample
affidavit is provided below.
AFFIDAVIT OF BIRTH
I, (name of relative), solemnly state and affirm as hereunder:
(1) I presently reside at ___________________________________.
(2) I am a citizen of _______________________________.
(3) I was born on ___________________ at________________.
(4) I am the (state relationship to the person whose birth is being verified)
(5) I personally know that (name of person) was born on ____________ at _________.
(6) A request has been made with the proper authorities for (name of person)'s
birth certificate but the same is unavailable.
____________________
Signed
Date:________________
I hereby affirm under the penalty of perjury pursuant to the laws of
the United States of America (28 U.S.C. Section 1746) that the foregoing is
true and correct.
This affidavit was executed on (date) at (Place).
____________________
Signed
Date:________________
 
Continue to: