Montresor hates Fortunato due to a perceived insult or injury that Fortunato has committed against him. The exact nature of this offense is not revealed in the story, but it is the driving force behind Montresor's desire for revenge.
Montresor uses the cask, or wine, as bait to lure Forunato into the catacombs. Once they are both in there, Montresor is able to murder Fortunato; in the end, there really was no cask.
In "The Cask of Amontillado," Montresor lures Fortunato into his family's catacombs under the pretense of tasting a rare wine called Amontillado. Once they are deep inside, Montresor chains Fortunato to a wall and walls him in, leaving him to die. This act is revenge for some unspecified insult that Fortunato has committed against Montresor.
Mario Forunato has written: 'Immigrato'
Not only because he's insane, but also because of his family name and motto "Nemo me impune lacessit" the latin meaning for "no one attacks me with impunity". He feels he deserves to punish Forunato because of the "thousand injuries" Fortunato caused him (insulting his pride).
David Montresor's birth name is David Edward Montresor Read.
Frederick Montresor was born in 1811.
Montresor believes that fortunato has repeatedly insulted him
Robert Montresor Rogers was born in 1834.
John Montresor died on 1799-06-26.
Maxminio Montresor was born on 1980-03-03.
Frederick Montresor died on 1887-12-15.
Robert Montresor Rogers died in 1895.