Legal Question in Family Law in Mississippi

Re: Name Change

You can informally change your name by just going by another name, but that is not practical these days. So you should file a petition for a name change with the Chancery Court, possibly makethe Dept of Vital Records a defendant if you want the birth certificate changed, arrange for Social Security and other government bodies to recognize your name change.

See http://family.findlaw.com/changing-your-name/name-change-faq.html for more information.