Olga Kosakiewicz was a student of Simone de Beauvoir

Simone de Beauvoir

Simone-Ernestine-Lucie-Marie Bertrand de Beauvoir, often shortened to Simone de Beauvoir , was a French existentialist philosopher, public intellectual, and social theorist. She wrote novels, essays, biographies, an autobiography in several volumes, and monographs on philosophy, politics, and...

 who joined the circle of de Beauvoir and Jean-Paul Sartre

Jean-Paul Sartre

Jean-Paul Charles Aymard Sartre was a French existentialist philosopher, playwright, novelist, screenwriter, political activist, biographer, and literary critic. He was one of the leading figures in 20th century French philosophy, particularly Marxism, and was one of the key figures in literary...

 in the autumn of 1935 when she was 18. She and her sister, Wanda Kosakiewicz

Wanda Kosakiewicz

Wanda Kosakiewicz was one of Jean-Paul Sartre's love interests and Olga Kosakiewicz's sister. Sartre wrote that she was one of the reasons that his friendship with Albert Camus went sour....

, are fused together to make one central character in de Beauvoir's first novel L'Invitée (She Came to Stay

She Came to Stay

She Came to Stay is a novel written by French author Simone de Beauvoir first published in 1943. The novel is a fictional account of her and Jean-Paul Sartre's relationship with Olga Kosakiewicz and Wanda Kosakiewicz.-Plot:...

, 1943, Gallimard), which was dedicated to Olga (where her name appears as Kosakievicz in the Norton translation).

In Sartre's trilogy of novels, Les Chemins de la Liberté (The Roads to Freedom

The Roads to Freedom

The Roads to Freedom is a series of novels by Jean-Paul Sartre. Intended as a tetralogy, it was left incomplete with only three of the planned four volumes published....

), the character of Ivich is considered a representation of Olga.

Deirdre Bair's

Deirdre Bair

Deirdre Bair is the critically acclaimed author of five works of nonfiction. She received the National Book Award for Samuel Beckett: A Biography. Her biographies of Simone de Beauvoir and C. G. Jung were finalists for the Los Angeles Times Book Prize...

 biography of Simone de Beauvoir examines this relationship. Hazel Rowley

Hazel Rowley

Hazel Joan Rowley was a British-born Australian author and biographer.Born in London, Rowley emigrated with her parents to Adelaide at the age of eight. She studied at the University of Adelaide, graduating with Honours in French and German. Later she acquired a PhD in French...

 also discusses it at length in her book about the relationship between Simone de Beauvoir

Simone de Beauvoir

Simone-Ernestine-Lucie-Marie Bertrand de Beauvoir, often shortened to Simone de Beauvoir , was a French existentialist philosopher, public intellectual, and social theorist. She wrote novels, essays, biographies, an autobiography in several volumes, and monographs on philosophy, politics, and...

 and Jean-Paul Sartre

Jean-Paul Sartre

Jean-Paul Charles Aymard Sartre was a French existentialist philosopher, playwright, novelist, screenwriter, political activist, biographer, and literary critic. He was one of the leading figures in 20th century French philosophy, particularly Marxism, and was one of the key figures in literary...

.

Olga married Jacques-Laurent Bost

Jacques-Laurent Bost

Jacques-Laurent Bost , was a French journalist. He worked for the satirical newspaper Le Canard enchaîné, and was a friend of Jean-Paul Sartre, and of Simone de Beauvoir, who was his lover. He married Olga Kosakiewicz....

, a long-time lover of de Beauvoir.