Ernst Gräfenberg Ernst Gräfenberg Ernst Gräfenberg (September 26, 1881 in Adelebsen near Göttingen, Germany – 28 October 1957 in New York City, United States) was a German-born physician (medical doctor) and scientist. He is known for developing the intrauterine device (IUD), and for his studies of the role of the woman's urethra in orgasm. The G-spot is named after him. Gräfenberg studied medicine in Göttingen and Munich, earning his doctorate on 10 March 1905. He began working as a doctor of ophthalmology at the university of Würzburg, but then moved to the Department of Obstetrics and Gynaecology at the University of Kiel,
Wirnt von Grafenberg Wirnt von Grafenberg Wirnt von Grafenberg was a Middle High German poet of the thirteenth century. Grafenberg was a Bavarian nobleman who between 1202 and 1205 wrote an epic, entitled "Wigalois", which describes the adventures of Gawain's son, the name being a corruption of Guinglain le Galois. Wirnt took his material from the French romance "Le bel inconnu" of Renaud de Beaujeu, and used it with great freedom. Though extravagant and didactic, the poem is one of the best romances of the Arthurian cycle written in Germany, apart from the work of Wolfram von Eschenbach and Hartmann von Aue. A