Paul1977:

 

If your full legal name is "Joseph Peter Smith", and you enter into a contract that has a shortened version of your name like "Joe Smith", is it still a legally binding contract?

 

In the vast majority of contexts, unless the identity of one of the parties is at issue, the non-use of the full legal name is absolutely irrelevant. Even in cases where someone's name has been misspelt, provided the parties' intentions are clear (in the vast majority of cases it will be), this won't matter either.

And yes I am a lawyer.