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 of Swabia
Maria of Hohenstaufen was born in Arezzo, Tuscany, Italy on 3 April 1201. She was the second daughter of Philip of Swabia and Irene Angelina of Byzantium. In 1208, at the age of seven, Maria was left an orphan by the unexpected deaths of her parents. On 21 June, her father was murdered by Otto of Wittelsbach, and two months later her mother died after giving birth to a daughter, who did not live beyond early infancy.