Affidavits for birth certificates could be good evidence.
I understand from the reading in forums and other immigration sites, the following are suggested evidence for the birth and parentage.
1. SSC/SSLC Certificate showing the date of birth.
2. Affidavits from two elder relatives living with you or living in your birth place in the following format will be helpful:
<QUOTE>
AFFIDAVIT BY [Close Relative's First Name] [Close
Relative's Last Name]
Re: <Beneficiary's Full name>
I, [Close Relative's First Name] [Close Relative's Last Name], hereby depose and say:
That I, [Close Relative's First Name] [Close Relative's Last Name] , was born on [date] in the town/city of [City], [Country].
My full and complete address is [street address with apartment or house number, town/city, state, postal zip code].
That I am closely related to <Beneficiary's Full name>. I am his <relation>.
That <Beneficiary's Full name> was born on ddth Month, YYYY in <City>, <State>, <Country> to my <relation to mother>, <Mother's fullname> and my <relation to father>, <Father's fullname>.
That I have direct personal knowledge of the event and circumstances concerning the birth of <Beneficiary's Full name> because I was living <living status Ex: living with parents> at the time of <his/her> birth.
That I have known <Beneficiary's Full name> since <BirthDate>.
This affidavit is being submitted because the birth was registered late in official records.
I declare under penalty of perjury, that the foregoing is a true and correct statement.
______________________________
<Fullname of the person signing>
Solemnly affirmed and sworn to before me the content
of the above affidavit declaration having been truly
and audibly read over and explained to him who
understood the same and signed before me on this day
of _______________________ at my office.
(Notary)
<UNQUOTE>
Please edit this as needful. Hope this helps.