I have just found this on Wikipedia. I never knew this before. I do know that she doesn't have a middle name, but didn't know her name was spelled that way!
Ullman later recalled, "My real name is Trace Ullman, but I added the 'y.' My mother said it was spelled the American way, but I don't think she can spell! I always wanted a middle name. My mum used to tell me it was Mary but I never believed her. I looked on my birth certificate and I didn't have one, just Trace Ullman."