When Henry Sullivan opened the question of the insight that the writings of Jacques Lacan could bring to the comedia, he came somewhat early on to Tirso's magisterial comedia de enredo [comedy of intrigue and deception], Don Gil de las calzas verdes. As with most things Lacanian, his paper, "The Sexual Ambiguities of Tirso de Molina's Don Gil de las calzas verdes," is not easily accessible, having been published in the Proceedings of the Third Annual Golden Age Drama Symposium in El Paso, Texas. It is an important contribution to Tirsian studies, however, and he identifies three themes that bring Lacan to bear on the text: "1) the fictionality of identity, 2) the role of desire in the subversion of convention, and 3) the arbitrariness of secondary gender distinctions between the sexes." It is the first and third assertions that are of interest here, especially as they relate to Juana's identities and the reactions of other characters to her.