Jonkheer Douwe Sirtema van Grovestins (Leeuwarden, Brussels, 1710 – February 26, 1778) was a Frisian courtier at the court of which stadtholder, that was the first hereditary Stadtholder of all the United Provinces?
Douwe Sirtema van Grovestins Jonkheer Douwe Sirtema van Grovestins (Leeuwarden, Brussels, 1710 – February 26, 1778) was a Frisian courtier at the court of stadtholder William IV, Prince of Orange, and later at the court of his widow Anne, Princess Royal and Princess of Orange. He was first Chamberlain, later Equerry to the stadtholder, and equerry to the Princess after her husband's death.
Adolph John I, Count Palatine of Kleeburg Adolph John I (German: "Adolf Johann I.", Swedish: "Adolf Johan") (21 October 1629 – 24 October 1689) was Count Palatine of Kleeburg from 1654 until 1689 and was considered Prince of Sweden until 1660.