Alexander Dumbass

An exceptional dullard, though not to the level of Henry Dumbass.

Then the contestant, reacting to the audience's laughter after she identified the author of The Three Musketeers as "Alexander Dumbass", said, "No...wait... Henry Dumbass!" -- from the Pardon My Blooper album, 1957.

Alexander Dumbass

The guy who wrote the count of Monte Crisco

Person 1: "The Count of Monte Crisco."
Person 2: "That says Cristo you dumb-shit."
Person 2: "...By...'Alexander Dumbass'"