The process for legally changing your first name is the same as for legally changing your last name. It differs somewhat from state to state, so find out how to get started.
In most states, you don't need a court order to change your last name due to marriage, divorce or adoption -- the marriage, divorce or adoption certificate is sufficient to evidence your name change and ...
Most states recognize an inherent right to change your name for non-fraudulent purposes. Most states do require a court order to change your middle name.