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.
Sibylle of Brandenburg
Sibylle survived her husband by 13 years. At the request of Maria and John II, who resided in Cleves, she acted as governor of Jülich-Berg during this period. Sybille was described as spirited, energetic and wise and an equitable mother for her country.