also related to the Romanovs and the Narischkins, powerful aristocratic families of Russia. In another confabulatory twist, Weber reports that Baladine's lover, the poet Rainer Maria Rilke, had said that the Spiros were descended from one of the richest families of Sephardic Jews, that is that they were of Spanish, not Eastern European origin. Weber doubted this story too, since Balthus's son Fumio, born in the late 1960s, had Tay–Sachs disease, a genetic disorder commonly associated with Eastern European Jews. Balthus's older brother Pierre Klossowski (1905 - 2001) became a noted writer and philosopher. The Klossowski children grew up in an art-world environment, with frequent visits to their household by famous artists and writers, including Rilke, André Gide (who mentored Pierre), and Jean Cocteau (who would depict the family in scenes of his 1929 novel Les Enfants Terribles). The artists Maurice Denis and Pierre Bonnard were also visitors. The children had a Scottish nanny, and Balthus would later say that his first language was English, although his parents spoke German to one another. Overall, Balthus had an idyllic memory of these early childhood years, which were disrupted when, shortly after the First World War began in 1914, the family were forced to leave Paris in order to avoid deportation due to their German citizenship. They settled first in Switzerland, later in Berlin. In 1917 his parents separated, and his mother moved with the two boys to Geneva. They lived in a modest flat at 11, rue Pré-Jérôme, a comfortable neighborhood. About a year later his mother became the lover of Rilke. Rilke was very impressed with the young "Baltusz"'s artistic talent, and helped him to publish his first work in 1921, at the age of 13. This was a book titled Mitsou which included forty drawings by Balthus and a preface by Rilke. The comic-book-style pictures depicted the story of a young boy who loses his beloved cat. The themes of the story foreshadowed Balthus's lifelong fascination with cats, along with a feeling of loss or disappearance. At Christmas of 1921, Baladine, financially destitute, moved to Berlin with her children in order to live with her brother. Young adulthood In 1926 Balthus visited Florence, where he copied many frescos by the Renaissance master Piero della Francesca. This inspired an early ambitious work of his: the tempera wall paintings of the Protestant church of the Swiss village of Beatenberg which he