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. William IV, Prince of Orange: William IV, Prince of Orange-Nassau (Willem Karel Hendrik Friso; 1 September 1711 – 22 October 1751) was the first hereditary Stadtholder of all the United Provinces.
William IV, Prince of Orange-Nassau