Believe it or not his real name is Anthony Joseph. My husbands name is also Anthony (different middle name) but we call him Tony. When my son was born, my mom came up with TJ short for Tony Joseph. We didn't like "AJ". As my son has gotten older and is now in college, he goes by the name Anthony more often. I think myself, my husband, Lynn (my daughter and my parents are the only ones left that call him TJ. Of course when he's in trouble, it's Anthony Joseph.