The procedure is as follows: 1. Change name/surname in your country of citizenship, then apply for Brazilian temporary residency (Visto Temporário) with new documents. 2. Apply for Brazilian temporary residency with your current name/surname, undergo naturalization, obtain Brazilian citizenship, then change your name/surname as a Brazilian citizen. Changes in Russia are not required if you become Brazilian. Changing name/surname in your country of citizenship before applying for Brazilian residency will not cause problems. For children born in Brazil, parents can choose the surname of the father or mother; a third option is not allowed. As a Brazilian citizen, you can change your first name to any arbitrary choice or add a double name. Changing a surname is more complex and requires a stated reason (e.g., difficult pronunciation, negative associations in native language). Surname changes are more expensive than name changes.
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