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.
Sibyl Wilbur
Sibyl Wilbur O'Brien Stone (May 27, 1871 - July 21, 1946), best known as Sibyl Wilbur was an American journalist known for her biography of Mary Baker Eddy.