Maximiliane Euphrosine von La Roche was born in
Mainz on 4 May 1756. Her mother was the author
Sophie von La Roche () and her father was , an adopted and probably illegitimate son of Count , a high-ranking court official working for the
Elector of Mainz. Maximiliane was baptised as a Catholic; the godparents were , the daughter of Stadion, and Euphrosyne Unold, Sophie's grandmother. Maximiliane was the oldest daughter among eight children, five of whom reached adulthood. While her father was Catholic, her mother was a Protestant and did not convert to Catholicism after her marriage. In Mainz, the family lived in the palace. After Stadion's 1761 retirement, they moved with him to
Schloss Warthausen along with the rest of his family. From 1765, Maximiliane and her sister were educated in
Strasbourg, at the boarding school of the St Barbara convent. When Stadion died in 1768, relations between his legitimate sons and La Roche were strained, and the family moved on to live in the , a castle in
Bönnigheim, where Maximiliane's father had inherited a position from Stadion. In 1771, he became a high-ranking official as at the court of the
Electorate of Trier, serving Archbishop-Elector
Clemens Wenceslaus of Saxony, and the La Roche family moved to . Maximiliane also returned from Strasbourg to her family. In the same year, Sophie von La Roche published her first novel, ('The Story of Miss von Sternheim'), quickly making her famous. The La Roche residence became a literary salon known for ('sentimentalism'). Visitors included the poet
Johann Georg Jacobi and his brother, the philosopher
Friedrich Heinrich Jacobi; the educational reformer
Johann Bernhard Basedow; the poet and theologian
Johann Kaspar Lavater; and the authors
Johann Jakob Wilhelm Heinse,
Franz Michael Leuchsenring, and
Johann Heinrich Merck. The young Maximiliane was gracious and charming and popular with the visitors; Johann Georg Jacobi considered her as a potential bride. Another visitor was Sophie's former fiancé, the author
Christoph Martin Wieland, who described Maximiliane as ('the little
sylph with black eyes'). According to a letter written by Sophie von La Roche to Lavater after 1791, the
dean of
St. Leonhard, Frankfurt, Damian Friedrich Dumeiz, an old family friend, had already in 1771 arranged a later marriage between Maximiliane and his nephew von Strauß. However,
Friedrich Karl Joseph von Erthal, the future
Elector of Mainz, became aware of this plan. The engagement was then called off for political reasons and to further von Strauß's career. In 1772, the young poet and lawyer
Johann Wolfgang von Goethe visited the La Roche family in Ehrenbreitstein, where he met the 16-year-old Maximiliane (generally known as "Maxe") and fell in love with her. Goethe described her later in his autobiography, ('Poetry and Truth'): "[H]is eldest daughter ... was nothing else but amiable. She was rather short than tall of stature, and delicately built, her figure was free and graceful, her eyes very black, while nothing could be conceived purer and more blooming than her complexion." Goethe had shortly before spent much of the year in Wetzlar, where he had been a friend of
Johann Christian Kestner and had fallen in love with Kestner's fiancée,
Charlotte Buff. == Marriage and children ==