A. You must complete form PC 51 or PC 51c to begin a name change proceeding. Use this form (PC 51) unless you have good cause not to publish.You must complete form PC 51 or PC 51c to begin a name change proceeding. File a Petition for Name Change to start the process of changing your name. You can use the Do-It-Yourself Name Change tool to complete your petition. General affidavit form for use within the State of Michigan. Modify this affidavit to meet your specific needs. In the letter, include your full name, Social Security Number, Selective Service Number, date of birth, current mailing address and new name. Affidavit of Name Change: Declares a person's intent to change their legal name. A. You must complete form PC 51 or PC 51c to begin a name change proceeding.