Peter I, Grand Duke of Oldenburg
Prince
Peter I or Peter Frederick Louis of Holstein-Gottorp was the Regent of the Duchy of Oldenburg for his incapacitated cousin William I from 1785 to 1823, and then served himself as Duke from 1823 to 1829. Wikipedia
Born: January 17, 1755, Prabuty, Poland
Died: May 21, 1829 (age 74 years), Wiesbaden, Germany
Grandchildren: Peter II, Grand Duke of Oldenburg, Duke Peter of Oldenburg, Amalia of Oldenburg, and more
Children: Augustus, Grand Duke of Oldenburg and Duke George of Oldenburg