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 Alexander of Prussia Prince Alexander of Prussia Prince Friedrich Wilhelm Ludwig "Alexander" of Prussia (21 June 1820 – 4 January 1896) was the eldest child of Prince Frederick of Prussia and his wife, Princess Luise of Anhalt-Bernburg. Alexander joined the army at a young age, and was attached to the headquarters of Crown Prince Frederick during the Austro-Prussian War. During the morning of the decisive battle of Königgrätz, a humorous account recounted that while on his horse, it ran away; Alexander was found later in the afternoon seated on the horse in a neighboring wood, stating that his horse had insisted on going