Prince Henry of Prussia (1862–1929) became the club's patron. Henry was interested in motor cars as well and supposedly invented a windshield wiper and, according to other sources, the car horn. In his honor, the "Prinz-Heinrich-Fahrt" (Prince Heinrich Tour) was established in 1908, like the earlier Kaiserpreis a precursor to the German Grand Prix. Henry and his brother William gave patronage to the Kaiserlicher Automobilclub (Imperial Automobile Club). Henry also was an early proponent of introducing submarines and airplanes. He had merchant ships converted into seaplane tenders for operations in the Baltic Sea. Henry respected his brother, but this attitude was not returned in the
Prince Charles of Prussia Prince Charles of Prussia Prince Frederick Charles Alexander of Prussia (German: Prinz Friedrich Carl Alexander von Preußen) (29 June 1801 – 21 January 1883) was a younger son of Frederick William III of Prussia. He served as a Prussian general for much of his adult life and became the first "Herrenmeister" (Grand Master) of the Order of Saint John after its restoration as a chivalric order. Nevertheless, he is perhaps remembered more often for his patronage of art and for his sizable collections of art and armor. Charles was born in Charlottenburg Palace near Berlin, the third son of Frederick