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 Ferdinand of Prussia Prince Alexander Ferdinand of Prussia Prince Alexander of Prussia (Alexander Ferdinand Albrecht Achilles Wilhelm Joseph Viktor Karl Feodor; 26 December 1912 – 12 June 1985) was the only son of Prince August Wilhelm of Prussia and his wife Princess Alexandra Victoria of Schleswig-Holstein-Sonderburg-Glücksburg. Prince Alexander of Prussia was born on 26 December 1912 to Prince August Wilhelm of Prussia and his wife Princess Alexandra Victoria of Schleswig-Holstein-Sonderburg-Glücksburg. August Wilhelm was a younger son of Kaiser Wilhelm II. His parents divorced in 1920 and his mother remarried less than two years later; custody of the young prince was awarded to Alexander's