Аннотация:The contribution explores the Prague origines of the first Prague and Austrian female author of the Enlightenment, Maria Anna Sager, born Rosskoschny (1719-1805).The reconstruction of the carreer of her father Anton Ferdinand Roßkoschny (1679-1734) at the Böhmische Statthalterei -he ended as "Registrator" and "Expeditor" -proves his social ambitions.On the other hand ego -documents of him conserved in the National Archives at Prague reveal the sorrows and the "stress" of the well--established fonctioner, not only his fear in front of the people, but also for his reputation, his family and his soul.