"My husband and I were about to conduct an experiment on a poisonous gas, but he went for a walk and hasn't returned! I'm worried about those hooligans who follow Marat!"
―Madame Lavoisier to Arno.[src]

Marie-Anne Pierette Paulze Lavoisier (1758 – 1836) was a French chemist and the wife of Antoine Lavoisier, acting as his lab assistant and contributing to his work.


Born in 1758, Marie-Anne Pierette Paulze married Antoine-Laurent de Lavoisier, the chemist famous for the law of conservation of mass, at the age of thirteen. Interested in his research, Madame Lavoisier began to study chemistry herself, leading her to actively participate in her husband's laboratory work. In addition to her work in the laboratory, she translated books from English to French, allowing both to further their scientific knowledge.

During the French Revolution, Lavoisier was kidnapped, leading a distraught Madame Lavoisier to request the help of the Assassin Arno Dorian. Arno succeeded in this mission, safely returning Lavoisier to his residence and recovering the poison bomb formula that had been stolen by the followers of Jean-Paul Marat.

Following her husband's arrest and execution, she protested vehemently against the arbitrary nature of the proceedings. She subsequently attended to her husband's posterity, gathering his papers and organizing the publication of his memoirs posthumously.