Maria Sibylla Merian
Maria Sibylla Merian (2 April 164713 January 1717) was a German-born naturalist and scientific illustrator, a descendant of the Frankfurt branch of the Swiss Merian family. Merian was one of the first naturalists to observe insects directly.
Maria Wiedmaier
Maria Wiedmaier (born Maria Siegloch: 19 October 1896 – 20 October 1977) was a German political activist (KPD) who engaged in anti-fascist resistance during the twelve Nazi years. She spent most of that time in a succession of state detention institutions, ending the war as a survivor from the Ravensbrück concentration camp.