Answer: Joseph Haydn
More information: A week after his death, Joseph Haydn's (1732-1809) skull was stolen by a couple of scientists who studied the brains of geniuses. When confronted, they returned a skull alright, but it wasn't actually Haydn's. In fact it wasn't until 1954, over 100 years after his death, that Joseph's original skull was recovered and placed in his tomb in Austria alongside the fake.