I didn't know my father until the other day,the last name written on my birth certificate was a made up name and I wish to chane it,can someone advise me on doing so

i didnt know my father until jus the other day,the last name writen on my birth certificate was a made up name and i wish to chane it,can someone advise me on doing so

Depends on the law of the state or country where you were born, but in general no: it is really too late to do that.

First its not a good idea to piggyback your question on another thread. This can lead to confusion. So I've moved your question to its own thread.

You can change your name by a court filing. Its not hard nor expensive. However, it won't change your birth certificate.