Desdemona has married Othello who is a well-respected captain in the Venetian army despite the fact that he is not Venetian. Iago uses all his manipulative powers to paint Othello as a "lascivious Moor"(I.i.127) but fortunately, the Duke, who sees him as "valiant Othello,"(I.iii.47) does not believe it. After Othello's descriptions of how he won over Desdemona, the Duke is convinced that "I think this tale would win my daughter too."(171)
Othello is confused that anyone would cast such aspersions on his intentions and is quite confident that Desdemona will support him, which she does. She tells her father that, although she will be bound to him forever, she must "profess due to the Moor," (I.iii.188) much like her own mother did to him (Brabantio) when they were married. Desdemona is deeply in love with Othello.
Even when he kills Desdemona, he feels strongly that "nought I did in hate, but all in honor." (V.ii.298) Othello is convinced that he is saving her and will "thy former light restore."(9)