Berndt Fredrik Johan Stackelberg 4 Dec 1733 Frankfurt am Main - 2 Feb 1801 Lovisa (1733–1801) Parents Bernd Otto von Stackelberg Sofie Henriette Fredrika von Werkamp zu Alt-Barckhausen Children Henriette Amelie Stackelberg Siblings Fredrik Ulrik Bernt Otto Stackelberg baroness NN Stackelberg Partners Virginia Sofia Adlerberg