Margarethe Agnes Elise Räntsch (1880–1945), one of the very first female medical doctors in Germany. Her conferral of a doctorate was in 1908 at Julius-Maximilians-Universität in Würzburg, where she was one of the first three female scholars. Between 1917 an 1945 she lived at Wargenau manor near Cranz in Samland, East Prussia.