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,
Carl Ernst August Weihe and 1827, Weihe and his collaborator, Christian Gottfried Nees von Esenbeck, a taxonomic botanist, published a monograph of the German brambles, "Rubi Germanici descripti et illustrati", in which they described 49 species of "Rubus". The genus "Weihea" (now treated as a synonym of "Geissorhiza") was named in his honour. Carl Ernst August Weihe Carl Ernst August Weihe (1779–1834) was a German botanist and physician. Weihe was born on 30 January 1779 at Mennighüffen, the second of 12 children born to KarlJustus Weihe (1752-1829), a pastor, and his wife Anna (née Rebeker). As he later described himself as ""Mindensis"", it is