But that's not the name of a man, it's the name of a...

But that's not the name of a man, it's the name of a mountain! (...) "It is my name," Athos said calmly. "But you said your name was d'Artagnan." "I?" "Yes, you." "That is to say, someone said to me: 'You are M. d'Artagnan?' I replied: 'You think so?' My guards shouted that they were sure of it. I did not want to vex them. Besides, I might have been mistaken.