A noble "Moor", in the service of the Venetian State, Othello is introduced to us in the very first scene by the term "Moor", when Iago complains that Othello has made Cassio his lieutenant and not him. We also learn from Iago that Othello has a relationship with the fair Desdemona.
Respected by the Duke of Venice, who is the first to address him by name (Othello in Act I, Scene III) and who sends for him when Cypress is threatened by Turkish forces, Othello is continuously described by his critics (Brabantio, Iago) as a "Moor" a reference to his dark skinned appearance and a reference to the race of Muslim peoples of north-western Africa to which Othello belongs. 2. Though made Governor of Cypress in Act I, Scene III, Othello's fortunes rapidly change for the worst as Iago succeeds in making Othello believe his loyal wife is having an affair with his lieutenant Cassio, a belief that leads to Othello killing his loyal, loving wife and later himself when he realizes that he was wrong and merely tricked by Iago. 3.
)Tactful and wise, Othello does not fight Brabantio when he accuses him of bewitching his daughter in Act I. Instead he offers no resistance and speaks with Brabantio before the Duke where Othello with Desdemona's testimony, proves his marriage is one made of love not witchcraft.Polite and courteous, he addresses the Duke and company in Act I as "My very noble and approv'd good masters," (Act I, Scene III, Line 77). 4.
)Nonetheless he allows the threat to his pride that Desdemona's infidelity would represent, to allow him to trust Iago on some very circumstantial evidence (Iago saying Cassio boasted of sleeping with Desdemona, Cassio having Desdemona's handkerchief and Cassio talking about a woman Othello does not realize is Bianca) which leads to his murdering his wife, to prevent her abusing other men when we really know it is to avenge his own pride. . )Ultimately Othello realizes this but too late after killing his loving and trusting wife.