German writer, born in Frankfurt am Main in 1785 and died in Berlin in 1859. After the death of his parents he/she spent his childhood and youth in a Catholic boarding school in Fritzlar, and subsequently moved to Offenbach at House of her grandmother, the writer Sophie von la Roche, who would exert a fundamental influence in their education. Along with his many trips and frequent stays at his brothers House, was undoubtedly the intensive contact with his brother Clemens Brentano which would decisively influence in his development as a writer. This we must add also his deep friendship with the poet Karoline von Günderode, his relationship with the mother of Goethe, whose memories of the childhood of the writer have been preserved for posterity thanks to the work of Bettina Goethes Briefwechsel mit einem Kinde (Goethe's correspondence with a girl, 1835), and even the personal contact with the own GoetheBettina who professed great admiration throughout his life.
During the years of his marriage to Achim von Arnim, he/she lived with her seven children between Berlin and its house Wiepersdorf. In Berlin he/she maintained numerous contacts with artists and intellectuals of the time (Karl Friedrich Schinkel, Ludwig Tieck, A.H. Hoffmann von Fallersleben, Friedrich Schleiermacher, the Brothers Grimm (Jakoband Wilhelm) and Friedrich Carl von Savigny ) among others.
On the death of her husband in 1831 he/she dealt with the edition of the works written by him prior to the publication of their own. Die Günderode (the Günderode) appears in 1840 and 1844 Clemens Brentanos Frühlingskranz (Crown of flowers of Clemens Brentano), both works of the epistolary genre something aside from the traditional canons. Their efforts to carry out social reforms, his call to Federico Guillermo de Prusia that improve the economic situation of the proletariat (Dieses Buch gehört dem König, this book belongs to the King, 1842) failed to alter the image of the little girl Bettina sitting at the foot of Goethe. Only with the release of the Armenbuch (book of the poor, 1844), work which is placed decidedly on the side of the prisoners and victims of political persecution, he/she change this image. Bettina von Arnim sought to capture the poverty problem openly proposing as a solution to a social utopia (Gespräche mit Dämonen.) Des Konigsbuchs zweiter Band, dialogues with demons. Second volume of the book of the King, 1852); his intention was braked by Prussian censorship.