Albertine Marat is Jean-Paul Marat’s devoted sister. Born in a Prussian region of modern-day Switzerland, Albertine lives in Paris with her brother and his common-law wife, Simone Evrard. She works making clock parts.
Albertine Marat | British Museum
Jean-Paul Marat | The People's Friend | Chapter X | Marat’s family- Bax
https://en.wikipedia.org/wiki/Marat/Sade_(film)
Charlotte Albertine Marat : Sister of Jean Paul Marat / did his sister inspire Charlotte Corday character / name ? JP Marat : “ One of his major areas of interest was in https://en.wikipedia.org/wiki/Magnetism. Repulsion, he held, was not a basic force of nature. “