William I was king of the Netherlands and grand duke of Luxembourg from 1815 until his abdication in 1840.
William was the son of William V, Prince of Orange, the last stadtholder of the Dutch Republic, and Wilhelmina of Prussia. Wikipedia
Born: August 24, 1772, The Hague, Netherlands
Died: December 12, 1843 (age 71 years), Berlin, Germany
Grandchildren: William III of the Netherlands, Prince Henry of the Netherlands, Louise of the Netherlands, and more
Spouse: Henrietta d'Oultremont (m. 1841–1843) and Wilhelmine of Prussia, Queen of the Netherlands (m. 1791–1837)
Full name: Willem Frederik Prins van Oranje-Nassau