Original: Names with superscript letter H are listed by Robert Hardman , Monarchy : The Royal Family at Work ( Druck : Ebury Press , 2007 ) Names with superscript letter R are listed by William Addams Reitwiesner , '' Persons Eligible to Succeed to the British Throne as of 1 Jan 2001 '' .
Simplified: Names with superscript letter R are listed by William Addams Reitwiesner , '' Persons Eligible to Succeed to the British Throne as of 1 Jan 2001 '' .