Frederika Afanasyevna von Freygang Freygang, Frederika Afanasyevna von née Kudryavskaya, 1790—1863 (1790–1863) Parents Athanasius von Kudriaffsky Children Alexander Freygang Andrej Vasil'evich Frejgang Heinrich Freygang Siblings Emilian von Kudriaffsky Gregor von Kudriaffsky Johann Kudriaffsky Partners Wilhelm Freygang