In 1803 in the colonial South American city of La Plata, Doña Martina Vilvado y Balverde presented herself to church and crown officials to denounce her husband of more than four years, Don Antonio Yta, as a “woman in disguise.” Forced to submit to a medical inspection that revealed a woman’s body, Don Antonio confessed to having been María Yta, but continued to assert his maleness and claimed to have a functional “member” that appeared, he said, when necessary.