Pseudonyms Helmina von Chézy Wilhelmine Christiane de Chézy Life Birthdate January 26, 1783 Birth Location Berlin, Germany Death Date January 28, 1856 Death Location Geneva, Switzerland Family Married to Freiherrn Gustav von Hastfer, Antoine-Léonard de Chézy Children Wilhelm Theodor von Chézy Max von Chézy Leopold (born and died in 1811)