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.
St Merryn
Alban Butler describes the celebrated Saint Marina of Bithynia as a woman who lived and died during the 8th century. In her earnestness to live the life of a monk, she dressed and assumed the persona of a man. In 1228 she was identified by William of Paris as a titular saint (existing in title only) of a church in Paris. Her feast day is 17 July. The St Merryn feast day had been changed to the Sunday nearest to 7 July, Saint Thomas of Canterbury's feast day, when the church was rededicated to "The Blessed Meran and St. Thomas à Becket" during Henry VII's rule.