Bertha Wehnert-Beckmann (January 25, 1815-December 6, 1901) was possibly the first professional female photographer in the world.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Bertha_Beckmann

Portrait of Johannes Brahms by Bertha Wehnert-Beckmann
c.1853 / Salt print / 8″x6 1/4″ / State Art Collections, Dresden, Germany

Bertha Wehnert-Beckmann on Deutsche Digitale Bibliothek: https://bit.ly/3yUjDio

Further reading
http://www.daguerreotype-gallery.de/agermanlady/ladyenglish.html
http://www.daguerreobase.org/en/news/20-news-archive/46-a-german-lady-a-new-publication-by-jochen-voigt
Google translation of ‘Bertha Wehnert-Beckmann’ at https://research.uni-leipzig.de/