This essay suggests that Byron’s Manfred contains not an expression of Byron’s guilt about his incest with his half-sister Augusta Leigh, as previous critics have suggested, but rather considerable evidence of his lack of guilt. It argues that the play displays incest and torment, but in fact does not link the two, instead displaying Manfred’s love for Astarte as deeply felt without regrets. The essay then argues that one finds the same combination of deep love and lack of regret in Byron’s remarks about his relationship with his half-sister, as well as in the representations of incest in his other works. It suggests that this acceptance of incest links to Byron’s commitment to rational thinking and personal freedom, and it invites future criticism to explore this connection in more detail.