ใครแต่งงานกับFrederick August I, Duke of Oldenburg?

Frederick Augustus I (German: Friedrich August) (20 September 1711 – 6 July 1785) was Prince-Bishop of Lübeck from 1750 to 1785, and Count and later the first Duke of Oldenburg from 1773 to 1785.

Princess Ulrike Friederike Wilhelmine of Hesse-Kassel (German: Ulrike Friederike Wilhelmine Prinzessin von Hessen-Kassel (31 October 1722, Kassel; 28 February 1787, Eutin) was a member of the House of Hesse-Kassel by birth, and of the House of Holstein-Gottorp through her marriage to Frederick Augustus I, Duke of Oldenburg. Ulrike was the Duchess consort of Oldenburg from 1774 until her husband's death on 6 July 1785.