Ganondorf was first given the last name of Dragmire in A Link to the Past. Since then, it has not been mentioned. Recently, however, an update to the official Zelda website revived the full name Ganondorf Dragmire, although without tying it to any specific incarnation.
While this won’t affect the timeline or any major lore, it’s nice to see an old trivia fact return as canon. Perhaps a future Zelda title will see a return of the man known as Ganondorf Dragmire.