Part 1 of Form I-751, Petition to Remove Conditions on Residence, is intended for providing general information about you, the conditional resident.
In Form I-751 part 1 you should indicate the following information: your full name, other names used (list all other names you have ever used, including aliases, maiden name, and nicknames), date of birth, country of birth, country of citizenship or nationality, A-Number (if any), U.S. Social Security Number (if any), USCIS online account number (if any), marital status, expiration date of conditional residence, mailing address, physical address, and some additional information about you (whether you are in removal, deportation, or rescission proceedings; whether you have ever been arrested, charged, etc.). Read the form carefully and follow the brief tips provided therein.