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 Henrietta of Naples and Sicily
Maria Henrietta (; 31 July 1787 – 10 September 1792) was a member of the House of Bourbon and a princess of the Kingdom of the Two Sicilies.