Prince XII is a cat owned by a member of the British royal family. He looks exactly like Garfield except that he has a British accent. He received all of his owner's inheritance after she passed.
This name may work for the singer, but not normal people. And certainly not doctors or lawyers. Hopefully this name dies and does not gain popularity to honor the singer.
The main villain in Samuel R. Delany's "Nova" is Prince Red, along with his sister Ruby. Prince is his first name, not a title, but the Reds own an enormous space travel company known as "Red-shift ltd".