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 her with fervour, to the extreme stupefaction and anger of the lady in question, who, it must be added, was at that time nearly seventy years of age". Despite never marrying, another source said Alexander declared marriage to every woman he met, "no matter if she be princess or laundress, octogenarian or young girl, married or single". 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