Peter von Biron The last Duke of Courland (1724-1800) (1724–1800) Parents Benigna Gottlieb von Trotha gt Treyden Ernst Johann von Biron Children Princess Johanna of Courland Princess Pauline, Duchess of Sagan Princess Dorothea of Courland Henriette Friederike, Gräfin von Wartenberg Peter von Gerschau Princess Wilhelmine, Duchess of Sagan Siblings Karl Ernst von Biron Hedvig Elizabeth von Biron Partners Princess Caroline of Waldeck and Pyrmont Princess Eudoxia Borisovna Yusupova Dorothea von Medem
