Why does Desd. marry Othello?

Why Does Desdemona Marry Othello? In the last scene of Othello, Desdemona recovers long enough from the smothering that her jealous husband has inflicted upon her to pronounce her complete innocence, and with her last breath tells Emilia, "a guiltless death I die" (V, ii., l.120). Plainly, Iago has deceived Othello into believing that his beautiful young wife has committed adultery with his once-trusted second in command, Cassio. That being so, Desdemona is clearly innocent …

…she has gone well beyond the role of a wife into that of a partner in a single identity based upon heroic fame and political power. Her desire to be associated with Othello in this deep and unnatural manner has moved Desdemona into a position in which she is vulnerable to the victimization that she eventually receives. Thus, her protestations of being guiltless at the hour of her death are technically true but spiritually suspect.