Descending from a noble family of French origin linked to the exploitation of geothermal resources in Tuscany, daughter of Bianca de Larderel and Emanuele Alberto Gurrieri, natural son of Vittorio Emanuele II of Savoy and Rosa Teresa Vercellana, Countess of Mirafiore.
Maria Bianca, born in 1884, grows very close to her mother, especially after the death of Emanuele of Mirafiore in 1894, followed two years later by the death of Vittorio, the second parent of the couple.
Educated in the Sisters of Badia a Ripoli's college, she soon expresses the literary passion and in 1900 makes her first novel "nuvole e sereno", in which she describes the emotions of the protagonist, in the time between the end of college studies and the marriage.
In 1903, at age 19, Maria Bianca, with the pseudonym of Mary White, publishes three her stories on Milan's "Rivista per signorine di Milano" (directed by Sofia Bisi Albini). He married in Florence on April 19, 1904 the Marchese Giovanni Battista della Robbia, from this union a daughter was born, Franca. In 1905, following disagreements between the two, Maria Bianca returns to live with her mother Bianca.