Just Found Out Dad is Not Biological Father; What is My Last Name?

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“I just discovered thru DNA testing that my “Dad” isn’t my “Father”.  My Dad signed my birth certificate and raised me, but I’m not sure if he did it knowing I wasn’t his.  My Father is dead, and my Dad never adopted me.  So, what is my last name?  Is it the same as my Dad because he signed the birth certificate, or is it the same as my Father because I wasn’t adopted?  I was born in MA in 1960.”

[NOTE: Articles and answers on DearEsq., while written and published by lawyers, do not constitute legal advice, and no attorney-client relationship is formed by your reading of this information. You should always consult with an attorney for any legal situations.]

Your last name is whatever is on your birth certificate, however if you wish to change it you should be able to easily do so through either your motor vehicle department, or your local courts, depending on in what state you currently reside.



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Author: House Attorney

A house attorney has answered this question.