The reference material states that it's a misconception that Anne Boleyn had an extra finger, so based on this information, the answer is that it is uncertain who actually had an extra finger.
While Anne Boleyn is popularly believed to have had six fingers on one hand, historical evidence suggests this is likely a fabrication. During the 16th century, physical abnormalities were often associated with witchcraft, which could have significantly impacted her reputation and even her marriage to King Henry VIII. Therefore, it's improbable that Henry would have chosen to marry someone with such a visible "defect."
There's no definitive historical record confirming the identity of a prominent historical figure who verifiably had an extra finger (polydactyly). Stories and rumors circulated, but concrete evidence is lacking.
