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.