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 Joachim of Prussia Prince Joachim of Prussia Prince Joachim Franz Humbert of Prussia (17 December 1890 – 18 July 1920) was the youngest son of Wilhelm II, German Emperor, by his first wife, Augusta Victoria of Schleswig-Holstein. He committed suicide at age 29. During the Easter Rising in Dublin in 1916, some republican leaders, including Patrick Pearse and Joseph Plunkett, contemplated giving the throne of an independent Ireland to Prince Joachim. While they were not in favour of a monarchy in itself, Pearse and Plunkett thought that if the rising were successful and Germany won the First World War, an independent Ireland would