What German doctor was also friends with Schack Carl Rantzau?
Johann Friedrich Struensee Johann Friedrich Struensee (5 August 1737 – 28 April 1772) was a German doctor. He became royal physician to the mentally-ill King Christian VII of Denmark and a minister in the Danish government. He rose in power to a position of ""de facto"" regent of the country, where he tried to carry out widespread reforms. His affair with Queen Caroline Matilda ("Caroline Mathilde") caused a scandal, especially after the birth of a daughter, Princess Louise Augusta, and was the catalyst for the intrigues and power play that caused his downfall and dramatic death.
Daniel Gottlieb Messerschmidt Daniel Gottlieb Messerschmidt (Russian: Да́ниэль Го́тлиб Ме́ссершмидт ) (September 16, 1685 – March 25, 1735) was a German physician, naturalist and geographer. He was born in Danzig and studied medicine in Jena and Halle, obtained his doctorate degree in the latter in 1713 and settled as a medical doctor in Danzig. In 1716, he came into contact with Russian emperor Peter the Great. By decree of November 5, 1718, Peter gave Messerschmidt the task to ”collect rarities and medicinal plants” from Siberia.