Maria Martin Bachman (July 3, 1796-December 27, 1863) was an American painter and scientific illustrator. She contributed many of the background paintings for Audubon’s The Birds of America.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Maria_Martin

Bachman’s Warbler / Audubon-Martin collaboration
1863 / Watercolor, graphite, gouache, with touches of black ink and pastel and selective glazing
Named for Maria Martin’s brother-in-law and later husband, Reverend John Bachman

Maria’s Woodpecker~ Maria was honored by Audubon in Birds of America. He named Maria’s Woodpecker for her; this is now considered a subspecies of the Hairy Woodpecker and unfortunately no longer bears her name.

Further reading:
https://uh.edu/engines/epi891.htm
http://lepcurious.blogspot.com/2015/04/steam-empowered-maria-martin-bachman.html
Audubon’s Method and Technique: https://www.audubon-prints.com/audubon-method-and-technique/