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Georg Heinrich (Grigory Ivanovich) Langsdorff was never a Prussian, nor born an aristocrat. He was born in Wöllstein, Duchy of Nassau (which was annexed by Prussia in 1866, longt after his death), pursued secondary studies in Bouxwiller (then part of Landgraviate of Hesse-Darmstadt) and Idstein (Duchy of Nassau), graduated Dr.med. from Göttingen University (Electorate, later Kingdom of Hannover, annexed by Prussia in 1866), died in Freiburg (Grand-Duchy of Baden). He spent his active life first in Portuguese, then (from 1803-1831) in Russian services. His father Johann Gottlieb L. was a low-level official (Oberamtmann) in the Duchy of Nassau services, without title. His own nobility stemmed from his ranking in Russian services. Sources: see article "Langsdorff" in the German Wikipaedia, and his entry in Allgemeine Deutsche Biographie (1883) [1]. Changes in text follow.
