Karl Heinrich Ulrichs
In 1862, Ulrichs told his family and friends that he was gay. He started writing under the pseudonym of "Numa Numantius". His first five essays, named Forschungen über das Rätsel der mannmännlichen Liebe (Studies on the Riddle of Male-Male Love), said that gay love was natural and biological. He used the Latin phrase anima muliebris virili corpore inclusa (a female psyche trapped in a male body). Ulrichs made many words for different sexual orientations in his essays. These words include Urning for a man who is attracted to men (English "Uranian"), and Dioning for a man who is attracted women. Ulrichs also made words for the female versions (Urningin and Dioningin), and for bisexuals and intersex people.