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 Friedrich Leopold of Prussia Prince Friedrich Leopold of Prussia Joachim Karl Wilhelm Friedrich Leopold Prinz von Preußen (14 November 1865 in Berlin – 13 September 1931 Krojanke manor, Landkreis Flatow, Posen-West Prussia) was a son of Prince Frederick Charles of Prussia and Princess Maria Anna of Anhalt-Dessau, married in 1854. On 24 June 1889 he married in Berlin Princess Louise Sophie of Schleswig-Holstein-Sonderburg-Augustenburg (8 April 1866 in Kiel – 28 April 1952 in Bad Nauheim), a sister of Empress Auguste Viktoria, wife of Emperor Wilhelm II. At age 10 in 1875 Kadett, in 1885 Premierlieutnant (Oberleutnant), 1888 Rittmeister (Hauptmann), 1890 Major and 1893 Oberst.