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,
Ernst Thälmann Island Ernst Thälmann Island Ernst Thälmann Island (, ) is a 15 kilometre long and 500 metre wide Cuban island in the Gulf of Cazones named for German Communist politician and activist Ernst Thälmann. The island was transferred over to East German control in 1972; however, when a German newspaper tried to visit the island after reunification, they were told this transfer was only "symbolic". Until 1972, the island was known as Cayo Blanco del Sur. On the occasion of a state visit in June 1972 by Erich Honecker, Fidel Castro renamed the island in honour of German Communist politician and