Names generally originating from noble, aristocratic or for want of a better word posh titles which can be used as names, whether you use them or not your call.
King, Prince, Duke, Marquess, Earl, Count, Baron, Sir, Knight, Major,
Princess, Duchess, Countess, Baroness, Lady
Marquess: Marc, Arq
Baron: Baz, Baro
Major: Maj, Jorie, Jor
Baroness: Ness, Nessie