People Peter Friedrich Wilhelm, Duke of Oldenburg Duke of Oldenburg (1754-1823)3 January 1754 – 2 July 1823 Frederick August I, Duke of Oldenburg20 September 1711 – 6 July 1785Princess Ulrike Friederike Wilhelmine of Hesse-Kassel31 October 1722 – 28 February 1787 Peter Friedrich Wilhelm, Duke of Oldenburg3 January 1754 – 2 July 1823 ParentsFrederick August I, Duke of Oldenburg20 September 1711 – 6 July 1785Princess Ulrike Friederike Wilhelmine of Hesse-Kassel31 October 1722 – 28 February 1787SiblingsHedvig Elisabeth Charlotte of Holstein-Gottorp22 March 1759 – 20 June 1818 From Wikipedia and Wikidata (public domain), updated daily.
