That would be Carey Elwis. I don't remember that quote in the movie though. And his name was Robin of Loxley or something similar to that in the movie...
It still means the same thing - Loxley was his home before it got taken by King whatever (or the Sheriff?) It's like saying Robin of Sherwood Forest - still Robin Hood.
Sorry, it was unclear whether you were trying to correct the name and make it sound like two different people since the additional info past "Cary Elwes" was unneeded to answer "whoever was in Men In Tights/Princess Bride".