Her well-educated family was friends with artists and writers, including José-Maria de Heredia and Paul Bourget.

At the age of 19, she read the published diary of Marie Bashkirtseff, and it had a profound effect upon her, spurring her to write intensely in her own journal.

[2] Catherine Pozzi was particularly known for six brilliant poems, published in 1935 (Mesures), and which she considered her literary testament: "Ave", "Vale", "Scopolamine", "Nova", "Maya" and "Nyx".

[3] In 1909 their son Claude (later a member of the French Resistance) was born, who married the Russian tennis player Ida Adamoff.

She began in 1920 a tumultuous relationship with Paul Valéry, which lasted eight years and gave rise to important correspondence.