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 Franz Wilhelm of Prussia Prince Franz Wilhelm of Prussia Prince Franz Wilhelm of Prussia ("Franz Wilhelm Victor Christoph Stephan"; born 3 September 1943) is a German businessman and member of the House of Hohenzollern, the former ruling German imperial house and royal house of Prussia. From 1976 to 1986 he was known as Grand Duke Mikhail Pavlovich of Russia. As a descendant of Wilhelm II, he is also a great-great-great-grandson of Queen Victoria and a fourth cousin of Charles, Prince of Wales. Prince Franz Wilhelm of Prussia was born in Grünberg, Silesia, as the son of Prince Karl Franz of Prussia (1916–1975) and his