At the moment , the title is used by Prince Willem-Alexander of the Netherlands ( Orange-Nassau ) , Georg Friedrich , Prince of Prussia ( Hohenzollern ) and Guy , Marquis de Mailly-Nesl Ã , Prince d'Orange . It is currently carried by Prince Willem-Alexander of the Netherlands ( Orange-Nassau ) , Georg Friedrich , Prince of Prussia ( Hohenzollern ) and Guy , Marquis de Mailly-Nesl Ã , Prince d'Orange .